AT2021yky: A Fast-Rising Optical Transient with Evolving Broad Hydrogen Emission Consistent with an Ambiguous Nuclear Transient

Aaron Do; Anna V. Payne; Benjamin J. Shappee; C. Ashall; Christopher Kochanek; Daniel R. Wilkins; Dhvanil D. Desai; Jason T. Hinkle; Katie Auchettl; Mark T. Reynolds

REVIEW 4 major objections 4 minor 296 references

AT2021yky: A Fast-Rising Optical Transient with Evolving Broad Hydrogen Emission Consistent with an Ambiguous Nuclear Transient

T0 review · 4 major / 4 minor · reviewed 2026-08-15 · deepseek-v4-flash

Challenge this review Re-run · record.json Download PDF Read on arXiv ↗ Review JSON

Pith's one-line read The fast-rising nuclear transient AT2021yky is best explained as an ambiguous nuclear transient, not a tidy TDE or AGN flare.

desk verdict A careful, well-observed single-object case study that justifies the ANT label; the main soft spot is the unquantified blackbody-vs-power-law SED choice, but that does not break the paper. read the letter →

arxiv 2608.06462 v1 pith:NOO3JUXE submitted 2026-08-06 astro-ph.HE

Paarmita Pandey , Jason T. Hinkle , Christopher Kochanek , Michael A. Tucker , Mark T. Reynolds , Katie Auchettl , C. Ashall , Dhvanil D. Desai

show 9 more authors

Aaron Do Willem B. Hoogendam M. E. Huber T. de Jaeger Thomas B. Lowe Anna V. Payne Benjamin J. Shappee Todd A. Thompson Daniel R. Wilkins

This is my paper · ORCID

classification astro-ph.HE

keywords ambiguousnucleartransienttidaldisruptioneventAGNflarefastblueopticalbroadH-alphaemissionblackbodySEDX-rayupperlimitsupermassiveblackholeaccretion

verification ladder T0 review T1 audit T2 compute T3 formal

The pith

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The reading

This study analyzes AT2021yky, an optical transient at redshift 0.076 that appeared in the nucleus of a galaxy with weak active-galactic-nucleus (AGN) signatures. The authors aim to establish that the event cannot be uniquely classified as a tidal disruption event (TDE) or an AGN flare, and that it belongs to the growing class of ambiguous nuclear transients (ANTs). The event rose in about 18 days, similar to luminous fast blue optical transients, but decayed on a roughly 32-day timescale and developed a single broad hydrogen-alpha line, traits more typical of TDEs. Its cooler blackbody temperature and the absence of helium and other Balmer lines, however, favor an ANT. If this reading is right, fast-rising nuclear flares can mimic stellar explosions while actually being accretion events onto supermassive black holes.

What carries the argument

The classification argument rests on three measurements carried through the paper: a single-temperature blackbody fit to the host-subtracted UV/optical SED (yielding bolometric luminosity, temperature, and photospheric radius), power-law and exponential fits to the optical light curve (yielding rise time, onset, and decline timescale), and Gaussian fits to the H$\alpha$ line profile in time-resolved spectra (yielding FWHM and line luminosity). These values are then placed on rise-time versus peak-luminosity and decline-rate versus peak-luminosity diagrams comparing TDEs, LFBOTs, supernovae, and previously known ANTs. The position of AT2021yky between these populations is what defines its ambiguous classification.

What would settle it

A detection of broad He II at 4686 Å or broad H$\beta$ in deeper host-subtracted spectra from the 20 to 40 day post-peak window would directly contradict the paper's single-line argument and push the classification toward a tidal disruption event; conversely, a continuum-independent H$\alpha$ line that does not track the UV/optical light curve would weaken the accretion-reprocessing scenario.

Watch

Extended reading notes

Core claim

AT2021yky reached a peak bolometric luminosity of $L_{\rm peak} = (4.1 \pm 1.1) \times 10^{43}$ erg s$^{-1}$, with a rest-frame rise time of $18.2 \pm 0.7$ days and an exponential decline timescale of about 32 days. Its early UV/optical spectral energy distribution is described by a single-temperature blackbody near 14,000 K, cooler than most optically selected TDEs, and no X-ray emission is detected above $L_X \lesssim 3.4 \times 10^{41}$ erg s$^{-1}$. Spectroscopically, a broad H$\alpha$ line with FWHM $\sim 11{,}000$ km s$^{-1}$ appears 20-40 days after peak, with no He II or other Balmer lines. The authors conclude that these properties place the source at the intersection of TDE, LFBOT, and AGN-flare parameter space, consistent with an ambiguous nuclear transient powered by accretion onto a $\sim 10^6$ solar-mass black hole, without being able to determine whether the accreting gas came from a disrupted star or a change in the pre-existing AGN's accretion state.

Load-bearing premise

The analysis assumes the transient's UV/optical emission is a single-temperature blackbody; if the true SED has multiple components, a non-thermal continuum, or significant dust reprocessing, the derived luminosity, temperature, and radius would be biased and the classification arguments built on them would shift.

Editorial extensions

If this is right

If AT2021yky is correctly classified, an 18-day rise time cannot by itself identify a fast blue optical transient, because accretion-powered nuclear flares can rise just as quickly.
The roughly 32-day exponential decline and the late-time broad H$\alpha$ line support an accretion-powered engine, so late-time spectroscopy is a key diagnostic for future fast-rising nuclear transients.
The X-ray and radio non-detections exclude a jetted TDE and a canonical LFBOT, sharpening the observable parameter space available to ANTs.
The host galaxy's weak AGN signatures and absence of long-term mid-infrared variability imply that low-luminosity AGN can produce nuclear flares without a strong pre-existing dusty torus, expanding the types of hosts in which ANTs are expected.
AT2021yky and the ANT ASASSN-20hx differ noticeably in their emission-line behavior, suggesting that the ANT class may contain multiple physical mechanisms rather than a single unified channel.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

If the single-temperature blackbody assumption is relaxed, or if a dust-reprocessed mid-infrared component contributed near peak, the derived peak luminosity, temperature, and radius — and therefore the placement relative to TDEs and LFBOTs — would shift; a multi-component SED fit or a transient detection in WISE would test this directly.
The observed H$\alpha$ broadening as the transient fades (FWHM increasing from roughly 9,600 to 12,000 km s$^{-1}$) resembles AGN broad-line-region behavior; a testable follow-up is to look for a reverberation lag between continuum and H$\alpha$ in comparable future objects.
If a larger sample of fast-rising, single-H$\alpha$ nuclear transients is assembled, the rise-time versus peak-luminosity plane may show a distinct locus between LFBOTs and TDEs, which would allow pre-classification of such events without waiting for spectra.
Near-infrared P$\alpha$ and P$\beta$ lines are detected alongside H$\alpha$; simultaneous optical-to-NIR spectroscopy could provide reddening-independent line ratios that discriminate between photoionization by a TDE disk and an AGN broad-line region.

Share X Bluesky LinkedIn Reddit HN

Signed reviews

No signed human review yet.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, and a circularity audit.

Desk Editor's Note

read the letter

Short version: this is a solid, careful single-object paper that earns its ambiguous nuclear transient label. The new thing is the object itself: the first detailed multi-wavelength study of AT2021yky, a fast-rising nuclear transient with a cool ~14,000 K blackbody, a single broad H-alpha line, no He II or H-beta, X-ray limits, and a host with weak pre-existing AGN activity. I agree with the reader's verdict and with most of the reasoning.

What the paper does well: the photometric coverage is broad (ZTF, ATLAS, Swift, WISE) and carefully handled; the host SED fit, BPT classification, and long-baseline WISE non-variability are all standard but executed cleanly. The SCUBA-2 limit is propagated thoughtfully, and the NLR light-travel calculation in Section 3.5 is a nice formal addition. The authors also repeatedly list assumptions rather than hiding them, especially in the radio-limit conversion and the blackbody interpretation.

The main soft spot is exactly what the stress-test note identifies: the single-temperature blackbody is load-bearing but is not tested against a power-law or composite model. Section 3.4 says the SED is "well described" by a blackbody, but there are no comparison fits, residuals, or goodness-of-fit statistics. Since the derived L_peak, T, and R are used throughout Section 4 to place AT2021yky in TDE/ANT parameter space, a different continuum shape could shift the object toward an AGN-flare interpretation. That said, the AGN-flare scenario has independent negatives: 11 years of no optical/MIR variability, a host whose AGN is weak, and a spectrum with only broad H-alpha and none of the typical AGN broad lines. So the qualitative conclusion is stable even if the quantitative SED comparison is thinner than it should be.

A second, minor issue: the absence of H-beta and He II is asserted without quantified upper limits, and the main spectroscopic analog, AT2020neh, also shows only H-alpha. The single-line argument is real but slightly less distinguishing than the paper implies. Minor enough that it does not change the classification.

No code is shipped, and the fitting uses standard scipy tools, which is fine for a paper of this type. The ancillary photometry table is a useful resource.

Who this is for: people working on TDEs, ANTs, and optical nuclear transients more broadly. It adds a well-characterized data point to a poorly understood class and will be useful in population studies. I would send it to a serious referee rather than desk reject it. With moderate revision—adding at least one comparison SED fit and quantified line upper limits—it would be a clean contribution.

Referee Report

4 major / 4 minor

Summary. AT2021yky is a nuclear transient at z=0.076 discovered by ZTF and initially classified as a Type II SN. This paper presents multi-wavelength photometry (ZTF, ATLAS, Swift UVOT), X-ray limits (Swift XRT), a submillimeter limit (JCMT/SCUBA-2), and optical/NIR spectroscopy covering ~1000 days. The authors characterize the host galaxy as a low-luminosity AGN with log M*~9.7 and log M_BH~6.1. The transient rises in ~18 days to a bolometric peak of (4.1±1.1)×10^43 erg/s, exhibits a blackbody SED with T~14,000 K, decays with tau~32 days, shows no X-ray or radio detection, and develops a broad (FWHM~11,000 km/s) H-alpha line without H-beta, He II, or other broad features. After ruling out a core-collapse SN, an LFBOT, and a typical AGN flare, and noting similarities to and differences from faint/fast TDEs, the authors conclude that AT2021yky is best classified as an ambiguous nuclear transient (ANT).

Significance. If correct, this paper adds a well-sampled, moderately low-luminosity example to the small but growing ANT class, helping to define the observational boundary between TDEs and AGN flares. The analysis is careful: uncertainties are propagated, comparisons use published samples, the radio-limit conversion lists its assumptions, and the conclusion is appropriately hedged. The paper also provides quantitative host-galaxy parameters and a clean presentation of the ambiguity.

major comments (4)

[Section 3.4 and 4.3] The claim that the UV/optical SED is better described by a blackbody than the power-law continuum characteristic of AGN emission is not supported by any quantitative model comparison. The paper should present a power-law fit to the same host-subtracted photometry, with residuals and a goodness-of-fit statistic (e.g., chi-square or BIC), and discuss how the derived L_peak, T, and R depend on the assumed SED shape. This is load-bearing because these parameters underpin the population comparisons in Figures 10, 13, and 14 and the exclusion of an AGN-flare interpretation.
[Section 3.4] The host-subtraction procedure for the Swift UVOT photometry is not described. Since the host galaxy (g~18.7) is comparable in brightness to the transient in the redder optical bands near the first Swift epoch, residual host light could bias the blackbody fit toward lower temperatures and larger radii, which are central to the 'cooler than typical TDEs' argument. Please specify how the host contribution was removed (e.g., using the FAST++ host SED model) and quantify the sensitivity of T, R, and L_peak to plausible host-subtraction uncertainties.
[Section 3.2] There is an inconsistency in the light-curve fits. The text states that the baseline luminosity k is fixed to the host galaxy g-band value, but Figure 1 shows host-subtracted light curves and Section 2.1 indicates that the ZTF forced photometry excludes the reference image flux. If the fits are performed on host-subtracted data, the baseline should be zero; if they are performed on total fluxes, this should be stated explicitly and the host addition justified. The derived first-light time and rise time (18.2 d) are load-bearing for the LFBOT comparison.
[Section 3.5] The non-detection of H-beta, He II, and other emission lines is stated without quantitative upper limits. Given that the absence of these lines is used to argue against a typical TDE classification, the authors should provide 3-sigma upper limits on the line fluxes (or equivalent widths) at the relevant epochs. This is particularly important because the comparison object AT2020neh also lacks these lines, weakening the spectroscopic distinction from TDEs.

minor comments (4)

[Section 3.5 (Eqs. 3-5)] The light-travel-time argument for the NLR illuminated fraction appears to assume a plane-parallel geometry (r < cΔt/(1-x)); for a central point source the illuminated fraction would scale as (cΔt/r_m)^3. The conclusion that f_irr is small is conservative, but the model should be justified or corrected.
[Figure 7 / Section 2.2] The statement that no significant WISE variability is seen near the transient peak is in tension with the acknowledged sparse coverage over MJD 59350-60050; please rephrase to avoid overclaiming.
[Table 2 / Section 3.1] Confirm that the WISE W1-W2 color comparison uses the correct magnitude system (Vega vs AB), since Table 2 lists WISE magnitudes in Vega.
[References] Several references are cited as arXiv e-prints (e.g., Cendes et al. 2021, Hinkle et al. 2020) without journal details; suggest updating to published versions where available.

Circularity Check

0 steps flagged · score 0.0 of 10

No significant circularity: AT2021yky's ANT classification is an interpretation of measured properties, not a prediction derived from an input that already contains it.

full rationale

The paper's central claim is that AT2021yky is best described as an ambiguous nuclear transient because its observed properties do not uniquely match any established class. This is a classification judgment based on measured quantities, not a derived prediction from a model that presupposes the conclusion. The rise time, decay timescale, blackbody temperature, luminosity, radius, and H-alpha FWHM are all descriptive fits to the photometry and spectra; they are then compared with literature samples of SNe, LFBOTs, TDEs, and ANTs. No equation in the paper reduces a target result to its own input by construction; for example, the illuminated-fraction derivation in Equations 3-5 is an independent geometric calculation used only to interpret the origin of the host narrow lines. The blackbody fitting is introduced as 'following the method of Hinkle et al. (2022)', a co-authored paper, but this is a standard observational fitting procedure rather than a load-bearing cited result that forces the classification. The assertion in Section 4.3 that a blackbody is preferred over an AGN-like power-law continuum lacks a shown comparison fit, which is a robustness or presentation weakness, but it is not circularity: it is an empirical claim about which continuum shape matches the SED, not a claim that the fitted output equals an input. Similarly, the absence of He II and H-beta is reported as a spectral observation and weighed alongside other evidence, not used as a pre-defined criterion that makes the ANT label true. Under the rule that circularity requires quoted evidence of a specific reduction, no such step exists here.

Assumptions & free parameters 9 free parameters · 5 assumptions · 0 invented entities

The central classification rests on fitted light-curve and blackbody parameters, on the assumption that the event is at the nucleus of the host galaxy, and on the assumption that late-time narrow-line ratios reflect pre-existing AGN activity. These are standard observational modeling choices, but they are not independently verified within the paper. No new physical entities are introduced; the only new object is the observed transient itself.

free parameters (9)

Power-law rise index alpha = 1.33 +/- 0.07
Fitted to ZTF g-band rise using Eq. 1; used to compare with faint-and-fast TDEs and LFBOTs.
First light time t1 = MJD 59462.94 +/- 0.31
Fitted in Eq. 1; defines rise time 18.2 +/- 0.7 rest-frame days.
Exponential decay timescale tau = 32.32 +/- 0.72 rest-frame days
Fitted to ZTF g-band decline using Eq. 2; used to place the event in the TDE decay range.
Blackbody temperature T = ~13,800 +/- 1,360 K at MJD 59503
MCMC blackbody fit to Swift and ZTF SED; the cool temperature is a key argument for ANT and faint-and-fast TDE classification.
Blackbody radius R = ~1.33 +/- 0.05 x 10^15 cm at MJD 59503
Derived from the same blackbody fit; used for Eddington and photosphere comparisons.
Peak bolometric luminosity L_peak = (4.1 +/- 1.1) x 10^43 erg/s
Interpolated from blackbody fits; central to comparisons with TDEs, ANTs, and LFBOTs.
Host galaxy stellar mass log M*/Msun = 9.69 (+0.04/-0.22)
FAST++ SED fit to pre-transient photometry; used with the M_BH-M* relation to infer black hole mass and Eddington ratio.
Host galaxy dust attenuation A_V = 0.58 (+0.73/-0.40) mag
FAST++ fit; affects host SED normalization and the inferred stellar mass.
Host galaxy star formation rate = ~0.5 Msun/yr
FAST++ fit; characterizes the host but is not directly load-bearing for the ANT classification.

assumptions (5)

domain assumption The source is at redshift z=0.076 and is spatially coincident with the host galaxy nucleus (offset less than 0.3 half-light radius).
Adopted from TNS classification and the astrometric analysis in Section 3.1; if the redshift or nuclear association is wrong, all luminosity and nuclear-transient arguments fail.
domain assumption The UV/optical transient SED is well described by a single-temperature blackbody.
Used in Section 3.4 to derive L, T, and R; no independent spectral shape validation outside the fitted photometry.
domain assumption Host galaxy line ratios from the late-time KCWI spectrum trace pre-existing narrow-line region conditions rather than transient photoionization.
Supported by the light-travel-time argument in Section 3.5, but assumes typical NLR radii of 10 to 1000 pc; a compact NLR would weaken the evidence for a pre-existing AGN.
standard math The adopted cosmology, extinction law, IMF, and stellar population models are standard.
Used for distance, extinction correction, and host SED fitting; these are standard tools in the field and not unique to this paper.
domain assumption The H-alpha line profile is approximately Gaussian for the FWHM measurement.
Used in Section 3.5; line profiles may be asymmetric, but the FWHM and its evolution are robust to this choice.

how reviews work

0 comments

Cite this review

Pith. "Pith review of AT2021yky: A Fast-Rising Optical Transient with Evolving Broad Hydrogen Emission Consistent with an Ambiguous Nuclear Transient." pith.science (2026). https://pith.science/paper/NOO3JUXE

@misc{pith2026260806462,
  author       = {Pith},
  title        = {Pith review of: AT2021yky: A Fast-Rising Optical Transient with Evolving Broad Hydrogen Emission Consistent with an Ambiguous Nuclear Transient},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/NOO3JUXE}},
  note         = {Machine review of arXiv:2608.06462}
}

abstract

Nuclear transients are powerful probes of supermassive black hole properties, offering insight into black hole mass, accretion physics, and the structure of galactic nuclei. Among these, a growing class of events cannot be classified as either tidal disruption events (TDEs) or active galactic nuclei (AGN) flares, and their physical origins remain poorly understood. We present a multi-wavelength photometric and spectroscopic analysis of AT2021yky (ZTF21abzciqh), an ambiguous nuclear transient (ANT) at a redshift of $z = 0.076$. AT2021yky reached a peak bolometric luminosity of $L_{\rm peak} = (4.1 \pm 1.1) \times 10^{43}~\mathrm{erg~s^{-1}}$, with a rise-time of $18.2 \pm 0.7$ days. The early-time UV/optical emission is well described by a blackbody with a temperature of $T \simeq 1.4 \times 10^{4}$ K, cooler than most optically selected TDEs. No X-ray emission from the transient is detected, with a $3\sigma$ limit of $L_X \lesssim 3.4 \times 10^{41}$ erg s$^{-1}$ near peak. Spectroscopic observations reveal a largely featureless blue continuum with broad (FWHM$\sim 11,000$ km s$^{-1}$) H$\alpha$ emission line that appears around 20$-$40 days post-peak. The host-galaxy emission-line ratios indicate the presence of an AGN, though the absence of optical or mid-IR variability and a non-AGN mid-IR color suggest it is weak. AT2021yky exhibits a rapid rise time comparable to that of luminous fast blue optical transients (LFBOTs), while its decay timescale and late-time broad H$\alpha$ emission resemble those observed in TDEs. However, its cooler blackbody temperature and the absence of He II and Balmer emission lines other than H$\alpha$ instead favour its classification as an ANT.

Figures

Figures reproduced from arXiv: 2608.06462 by the authors.

**Figure 1.** — Host-subtracted UV and optical light curves of AT2021yky, showing the Swift UV bands (blue, pink, and purple triangles), ZTF 𝑔 (green star), 𝑟 (yellow star), 𝑖 (red star), and ATLAS 𝑜 (orange circle). The photometry spans from roughly 400 days before peak to roughly 1200 days after peak in the observer frame. The diamonds (inverted triangles) show binned detections (3𝜎 upper limits) from the ZTF seasonal stacking.… view at source ↗

**Figure 2.** — SNIFS, LRIS and KCWI optical spectra of AT2021yky, where the time relative to the peak in the observed frame is given to the right of each spectrum. The spectra span from 7 days before peak (top) to ∼ 3 years after peak (bottom). Prominent emission lines are labeled. The dark gray-shaded regions show the strong telluric bands, and the light gray shows the dichroic region. The spectra are offset for visibility. AGN… view at source ↗

**Figure 3.** — SpeX near-IR Spectra of AT2021yky, where the time after peak in the observed frame is given above the spectra. Prominent emission lines are labeled. The vertical gray bands mark strong atmospheric telluric absorption regions. The panel shows the difference spectrum found by subtracting epoch 2 from epoch 1. This should be the transient-only emission, since we expect the emission to come mostly from the host galaxy… view at source ↗

Figures from the paper (9 more)

**Figure 4.** Figure 4: — [PITH_FULL_IMAGE:figures/full_fig_p006_4.png]

**Figure 5.** Figure 5: — Spectral Energy Distribution (SED) of the host galaxy. The FAST++ SED fit is shown in gray. The SPHEREx spectrum (truncated beyond 3.8𝜇𝑚 due to low SNR) is shown as the salmon points. The far-IR emission is not included in the model, since FAST does not model dust em…

**Figure 7.** Figure 7: — WISE 𝑊1 and 𝑊2 light curves spanning 11 years of data from July 2013 – July 2024, binned in 100-day bin sizes. No significant variability can be seen during this time, even near the transient peak. 3.3. Submillimeter Constraints In this section, we derive radio lumin…

**Figure 8.** Figure 8: — Power-law (exponential) models for the light curve rise (fall). The best-fit power-law index is 𝛼 = 1.33 ± 0.07 with the rise starting at 𝑡1 = MJD 59462.9 ± 0.3 (vertical dashed line). The best-fit decay rate is 𝜏 ≈ 32 days. data ≈20 days after peak ( [PITH_FULL_IMA…

**Figure 10.** Figure 10: — Evolution of the UV/optical blackbody luminosity (top panel), radius (middle panel), and temperature (bottom panel) for AT2021yky (black squares) compared to a sample of well-studied TDEs and ANTs. The comparison sample includes the TDEs ASASSN-19dj (cyan; Hinkle e…

**Figure 12.** Figure 12: — The near-peak host-subtracted SNIFS spectrum of AT2021yky compared with well studied transients: the ANT ASASSN-20hx (Hinkle et al. 2022), the LFBOT AT2018cow (Prentice et al. 2018), the SLSN-I SN2017egm (Bose et al. 2018), the TDE PS16dtm (Blanchard et al. 2017), a…

**Figure 11.** Figure 11: — Host-subtracted SNIFS spectra of AT2021yky spanning from a week before the transient peak to 40 days post-peak. The H𝛼 emission line broadens post-peak with the FWHM reaching ∼ 11, 000 km s−1 . A Gaussian fit is shown in purple, and the corresponding broad component…

**Figure 14.** Figure 14: — [PITH_FULL_IMAGE:figures/full_fig_p013_14.png]

**Figure 13.** Figure 13: — (Top) Peak luminosity versus rise time for various classes of optical transients. AT2021yky (red star, this work) is shown alongside AT2020neh (black diamond) for comparison. Other transients include FBOTs and LFBOTs (blue circles; Drout et al. 2014; Arcavi et al.…

Review history (2 revisions) →

Discussion (0). Continue with ORCID to comment.

Reference graph

Works this paper leans on

296 extracted references · 2 canonical work pages

[1]

doi:10.26131/IRSA144 , url =

NEOWISE-R Single Exposure (L1b) Source Table , publisher =. doi:10.26131/IRSA144 , url =

doi:10.26131/irsa144
[2]

, keywords =

Relations between Central Black Hole Mass and Total Galaxy Stellar Mass in the Local Universe. , keywords =. doi:10.1088/0004-637X/813/2/82 , archivePrefix =. 1508.06274 , primaryClass =

arXiv
[3]

, keywords =

The SPHEREx Satellite Mission. , keywords =. doi:10.3847/1538-4357/ae2be2 , archivePrefix =. 2511.02985 , primaryClass =

arXiv
[4]

The Open Journal of Astrophysics , keywords =

Unraveling the Nature of the Nuclear Transient AT2020adpi. The Open Journal of Astrophysics , keywords =. doi:10.33232/001c.151453 , archivePrefix =. 2509.03593 , primaryClass =

arXiv
[5]

, keywords =

Possible power source of Seyfert galaxies and QSOs. , keywords =. doi:10.1038/254295a0 , adsurl =

doi:10.1038/254295a0
[6]

, year = 2003, month = jan, volume =

Quantitative Spectroscopy of Photoionized Clouds. , year = 2003, month = jan, volume =. doi:10.1146/annurev.astro.41.011802.094836 , adsurl =

arXiv 2003
[7]

2025 , eprint=

A Time-Dependent Solution for GSN 069 Disk Evolution and the Nature of Long-Lived Tidal Disruption Events , author=. 2025 , eprint=

2025
[9]

and McKernan, Barry and Ford, K

Graham, Matthew J. and McKernan, Barry and Ford, K. E. Saavik and Stern, Daniel and Cantiello, Matteo and Drake, Andrew J. and Ding, Yuanze and Kasliwal, Mansi and Koss, Mike and Margutti, Raffaella and Rose, Sam and Somalwar, Jean and Wiseman, Phil and Djorgovski, S. G. and Veres, Patrik M. and Bellm, Eric C. and Chen, Tracy X. and Groom, Steven L. and K...

doi:10.1038/s41

Show all 296 references

[10]

, keywords =

Bolometric luminosities and Eddington ratios of X-ray selected active galactic nuclei in the XMM-COSMOS survey. , keywords =. doi:10.1111/j.1365-2966.2012.21513.x , archivePrefix =. 1206.2642 , primaryClass =

2012
[11]

Errors When Constraining Hot Blackbody Parameters with Optical Photometry , volume=

Arcavi, Iair , year=. Errors When Constraining Hot Blackbody Parameters with Optical Photometry , volume=. The Astrophysical Journal , publisher=. doi:10.3847/1538-4357/ac90c0 , number=

doi
[12]

, keywords =

A Catalog of Bulge, Disk, and Total Stellar Mass Estimates for the Sloan Digital Sky Survey. , keywords =. doi:10.1088/0067-0049/210/1/3 , archivePrefix =. 1310.8304 , primaryClass =

arXiv
[13]

, keywords =

Revisiting Optical Tidal Disruption Events with iPTF16axa. , keywords =. doi:10.3847/1538-4357/aa7337 , archivePrefix =. 1703.01299 , primaryClass =

arXiv
[14]

An Introduction to Active Galactic Nuclei
[15]

Physics of the Interstellar and Intergalactic Medium
[16]

and Brandt, W

Strateva, Iskra V. and Brandt, W. N. and Schneider, Donald P. and Vanden Berk, Daniel G. and Vignali, Cristian , year=. Soft X-Ray and Ultraviolet Emission Relations in Optically Selected AGN Samples , volume=. The Astronomical Journal , publisher=. doi:10.1086/431247 , number=

doi
[17]

and Milisavljevic, Dan and Chornock, Ryan and Margutti, Raffaella and Alexander, Kate D

Subrayan, Bhagya M. and Milisavljevic, Dan and Chornock, Ryan and Margutti, Raffaella and Alexander, Kate D. and Ramakrishnan, Vandana and Duffell, Paul C. and Dickinson, Danielle A. and Lee, Kyoung-Soo and Giannios, Dimitrios and Lentner, Geoffery and Linvill, Mark and Garret...
[18]

and Horesh, Assaf and Sfaradi, Itai and Bostroem, K

Makrygianni, Lydia and Trakhtenbrot, Benny and Arcavi, Iair and Ricci, Claudio and Lam, Marco C. and Horesh, Assaf and Sfaradi, Itai and Bostroem, K. Azalee and Hosseinzadeh, Griffin and Howell, D. Andrew and Pellegrino, Craig and Fender, Rob and Green, David A. and Williams, ...

doi
[19]

, keywords =

Multiwavelength observations of the extraordinary accretion event AT2021lwx. , keywords =. doi:10.1093/mnras/stad1000 , archivePrefix =. 2303.04412 , primaryClass =

arXiv
[20]

doi:10.26131/IRSA121 , url =

2MASS All-Sky Atlas Image Service , publisher =. doi:10.26131/IRSA121 , url =

doi
[21]

and Neustadt, Jack M

Holoien, Thomas W.-S. and Neustadt, Jack M. M. and Vallely, Patrick J. and Auchettl, Katie and Hinkle, Jason T. and Romero-Cañizales, Cristina and Shappee, Benjamin. J. and Kochanek, Christopher S. and Stanek, K. Z. and Chen, Ping and Dong, Subo and Prieto, Jose L. and Thompso...
[22]

, keywords =

Measuring Reddening with Sloan Digital Sky Survey Stellar Spectra and Recalibrating SFD. , keywords =. doi:10.1088/0004-637X/737/2/103 , archivePrefix =. 1012.4804 , primaryClass =

arXiv
[23]

Transient Name Server Classification Report , keywords =

ZTF Transient Classification Report for 2021-07-27. Transient Name Server Classification Report , keywords =

2021
[24]

doi:10.26131/IRSA1 , url =

AllWISE Source Catalog , publisher =. doi:10.26131/IRSA1 , url =

doi
[25]

arXiv e-prints , keywords =

Investigating the Nature of the Luminous Ambiguous Nuclear Transient ASASSN-17jz. arXiv e-prints , keywords =
[26]

Discovery and follow-up of ASASSN-23bd (AT 2023clx): the lowest redshift and luminosity optically selected tidal disruption event , volume=

Hoogendam, W B and Hinkle, J T and Shappee, B J and Auchettl, K and Kochanek, C S and Stanek, K Z and Maksym, W P and Tucker, M A and Huber, M E and Morrell, N and Burns, C R and Hey, D and Holoien, T W -S and Prieto, J L and Stritzinger, M and Do, A and Polin, A and Ashall, C...
[27]

, keywords =

The Prevalence of Narrow Optical Fe II Emission Lines in Type 1 Active Galactic Nuclei. , keywords =. doi:10.1088/2041-8205/721/2/L143 , archivePrefix =. 1009.2209 , primaryClass =

arXiv
[28]

Baldwin, J. A. and Ferland, G. J. and Korista, K. T. and Hamann, F. and LaCluyze, A. , year=. The Origin of Fe<scp>ii</scp>Emission in Active Galactic Nuclei , volume=. The Astrophysical Journal , publisher=. doi:10.1086/424683 , number=

doi
[29]

, keywords =

X-Ray Brightening and UV Fading of Tidal Disruption Event ASASSN-15oi. , keywords =. doi:10.3847/2041-8213/aaa0c2 , archivePrefix =. 1712.03968 , primaryClass =

arXiv
[30]

, keywords =

Coronal line emitters are tidal disruption events in gas-rich environments. , keywords =. doi:10.1093/mnras/stae022 , archivePrefix =. 2303.05525 , primaryClass =

arXiv
[32]

arXiv e-prints , keywords =

A unified model of tidal destruction events in the disc-dominated phase. arXiv e-prints , keywords =
[33]

, keywords =

Hard X-ray emission from a Compton scattering corona in large black hole mass tidal disruption events. , keywords =. doi:10.1093/mnras/stab1184 , archivePrefix =. 2104.06195 , primaryClass =

arXiv
[34]

, keywords =

``Hidden'' Seyfert 2 Galaxies and the X-Ray Background. , keywords =. doi:10.1086/345314 , archivePrefix =. astro-ph/0210047 , primaryClass =

arXiv
[35]

, keywords =

An Infrared and Optical Analysis of a Sample of XBONGs and Optically Elusive AGNs. , keywords =. doi:10.1088/0004-637X/794/2/112 , archivePrefix =. 1409.0905 , primaryClass =

arXiv
[36]

, keywords =

Progenitor, precursor, and evolution of the dusty remnant of the stellar merger M31-LRN-2015. , keywords =. doi:10.1093/mnras/staa1872 , archivePrefix =. 2004.04757 , primaryClass =

2015 arXiv
[37]

Analysis of stripped-envelope supernova light curves

The Carnegie Supernova Project I. Analysis of stripped-envelope supernova light curves. , keywords =. doi:10.1051/0004-6361/201730844 , archivePrefix =. 1707.07614 , primaryClass =

arXiv
[38]

SN 2018hwm, a faint event with an unusually long plateau

Low-luminosity Type II supernovae - III. SN 2018hwm, a faint event with an unusually long plateau. , keywords =. doi:10.1093/mnras/staa3730 , archivePrefix =. 2011.11297 , primaryClass =

2011 arXiv
[39]

, keywords =

Swift Follow-up Observations of Candidate Gravitational-wave Transient Events. , keywords =. doi:10.1088/0067-0049/203/2/28 , archivePrefix =. 1205.1124 , primaryClass =

arXiv
[40]

, keywords =

Spectropolarimetry of the Type II Supernovae 1997ds, 1998A, and 1999gi. , keywords =. doi:10.1086/322151 , archivePrefix =. astro-ph/0105295 , primaryClass =

arXiv
[41]

Black holes in binary systems

Reprint of 1973A&A....24..337S. Black holes in binary systems. Observational appearance. , year = 1973, month = jun, volume =

1973
[42]

, keywords =

gPhoton: The GALEX Photon Data Archive. , keywords =. doi:10.3847/1538-4357/833/2/292 , archivePrefix =. 1609.09492 , primaryClass =

arXiv
[43]

, keywords =

SpeX: A Medium-Resolution 0.8-5.5 Micron Spectrograph and Imager for the NASA Infrared Telescope Facility. , keywords =. doi:10.1086/367745 , adsurl =

doi
[44]

, keywords =

The Lick AGN Monitoring Project: Reverberation Mapping of Optical Hydrogen and Helium Recombination Lines. , keywords =. doi:10.1088/0004-637X/716/2/993 , archivePrefix =. 1004.2922 , primaryClass =

arXiv
[45]

The Near-Infrared Broad Emission Line Region of Active Galactic Nuclei. I. The Observations. , keywords =. doi:10.1086/522373 , archivePrefix =. 0708.1083 , primaryClass =

arXiv
[46]

arXiv e-prints , keywords =

The Rapid X-ray and UV Evolution of ASASSN-14ko. arXiv e-prints , keywords =
[47]

, keywords =

Sagittarius A* High-energy X-Ray Flare Properties during NuSTAR Monitoring of the Galactic Center from 2012 to 2015. , keywords =. doi:10.3847/1538-4357/aa74e8 , archivePrefix =. 1705.08002 , primaryClass =

2012 arXiv
[48]

, keywords =

Preliminary Results from NEOWISE: An Enhancement to the Wide-field Infrared Survey Explorer for Solar System Science. , keywords =. doi:10.1088/0004-637X/731/1/53 , archivePrefix =. 1102.1996 , primaryClass =

1996 arXiv
[49]

VizieR Online Data Catalog , keywords =

VizieR Online Data Catalog: AllWISE Data Release (Cutri+ 2013). VizieR Online Data Catalog , keywords =

2013
[50]

, keywords =

Feast and Famine: regulation of black hole growth in low-redshift galaxies. , keywords =. doi:10.1111/j.1365-2966.2009.14960.x , archivePrefix =. 0812.1224 , primaryClass =

2009
[51]

, keywords =

Gaia17biu/SN 2017egm in NGC 3191: The Closest Hydrogen-poor Superluminous Supernova to Date Is in a Normal, Massive, Metal-rich Spiral Galaxy. , keywords =. doi:10.3847/1538-4357/aaa298 , archivePrefix =. 1708.00864 , primaryClass =

arXiv
[52]

, keywords =

Fully Automated Reduction of Longslit Spectroscopy with the Low Resolution Imaging Spectrometer at the Keck Observatory. , keywords =. doi:10.1088/1538-3873/ab215d , archivePrefix =. 1903.07629 , primaryClass =

1903 arXiv
[53]

, keywords =

Four (Super)luminous Supernovae from the First Months of the ZTF Survey. , keywords =. doi:10.3847/1538-4357/abaeec , archivePrefix =. 1910.02968 , primaryClass =

1910 arXiv
[54]

, keywords =

Unobscured Type 2 Active Galactic Nuclei. , keywords =. doi:10.1088/0004-637X/714/1/115 , archivePrefix =. 1004.2077 , primaryClass =

arXiv
[56]

Optical Spectroscopic Observations of -Ray Blazar Candidates. I. Preliminary Results. , keywords =. doi:10.1088/0004-6256/147/5/112 , archivePrefix =. 1404.5211 , primaryClass =

arXiv
[57]

, keywords =

The HST view of the broad line region in low luminosity AGN. , keywords =. doi:10.1051/0004-6361/201321989 , archivePrefix =. 1401.5242 , primaryClass =

arXiv
[58]

, keywords =

BAT AGN Spectroscopic Survey XXVII: scattered X-Ray radiation in obscured active galactic nuclei. , keywords =. doi:10.1093/mnras/stab839 , archivePrefix =. 2103.10543 , primaryClass =

arXiv
[59]

, keywords =

ASASSN-18tb: a most unusual Type Ia supernova observed by TESS and SALT. , keywords =. doi:10.1093/mnras/stz1445 , archivePrefix =. 1903.08665 , primaryClass =

1903 arXiv
[60]

, keywords =

Initial Results from a Systematic Search for Changing-look Active Galactic Nuclei Selected via Mid-infrared Variability. , keywords =. doi:10.3847/1538-4357/ab5af9 , archivePrefix =. 1905.02904 , primaryClass =

1905 arXiv
[61]

, keywords =

Low-Resolution Spectral Templates for Active Galactic Nuclei and Galaxies from 0.03 to 30 m. , keywords =. doi:10.1088/0004-637X/713/2/970 , archivePrefix =. 0909.3849 , primaryClass =

arXiv
[62]

arXiv e-prints , keywords =

An AMUSING Look at the Host of the Periodic Nuclear Transient ASASSN-14ko Reveals a Second AGN. arXiv e-prints , keywords =
[63]

, keywords =

Early-time Light Curves of Type Ia Supernovae Observed with TESS. , keywords =. doi:10.3847/1538-4357/abcd42 , archivePrefix =. 1904.02171 , primaryClass =

1904 arXiv
[64]

, keywords =

High-cadence, early-time observations of core-collapse supernovae from the TESS prime mission. , keywords =. doi:10.1093/mnras/staa3675 , archivePrefix =. 2010.06596 , primaryClass =

2010 arXiv
[65]

The Astronomer's Telegram , keywords =

ASASSN-20hx is a Hard Tidal Disruption Event Candidate. The Astronomer's Telegram , keywords =
[66]

The Astronomer's Telegram , keywords =

Discovery of 9 ASAS-SN Supernova Candidates, Including 3 in the TESS Field of View. The Astronomer's Telegram , keywords =
[67]

, keywords =

BAT AGN Spectroscopic Survey - IV: Near-Infrared Coronal Lines, Hidden Broad Lines, and Correlation with Hard X-ray Emission. , keywords =. doi:10.1093/mnras/stx055 , archivePrefix =. 1701.02755 , primaryClass =

arXiv
[68]

, keywords =

The matter distribution in the local Universe as derived from galaxy groups in SDSS DR12 and 2MRS. , keywords =. doi:10.1051/0004-6361/201526711 , archivePrefix =. 1511.05856 , primaryClass =

arXiv
[69]

Third Reference Catalogue of Bright Galaxies
[70]

, keywords =

Catching jetted tidal disruption events early in millimetre. , keywords =. doi:10.1093/mnras/stw1543 , archivePrefix =. 1606.06830 , primaryClass =

arXiv
[71]

arXiv e-prints , keywords =

Radio Observations of an Ordinary Outflow from the Tidal Disruption Event AT2019dsg. arXiv e-prints , keywords =
[72]

, keywords =

SCUBA-2: the 10 000 pixel bolometer camera on the James Clerk Maxwell Telescope. , keywords =. doi:10.1093/mnras/sts612 , archivePrefix =. 1301.3650 , primaryClass =

arXiv
[73]

arXiv e-prints , keywords =

Discovery of a Fast Iron Low-ionization Outflow in the Early Evolution of the Nearby Tidal Disruption Event AT2019qiz. arXiv e-prints , keywords =
[74]

, keywords =

The metallicities of the broad emission line regions in the nitrogen-loudest quasars. , keywords =. doi:10.1093/mnras/stu007 , adsurl =

doi
[75]

, keywords =

Unusual Broad Absorption Line Quasars from the Sloan Digital Sky Survey. , keywords =. doi:10.1086/340546 , archivePrefix =. astro-ph/0203252 , primaryClass =

arXiv
[76]

, keywords =

The Two-Phase Pair Corona Model for Active Galactic Nuclei and X-Ray Binaries: How to Obtain Exact Solutions. , keywords =. doi:10.1086/177865 , archivePrefix =. astro-ph/9605073 , primaryClass =

arXiv
[77]

, keywords =

Fainter harder brighter softer: a correlation between _ ox , X-ray spectral state, and Eddington ratio in tidal disruption events. , keywords =. doi:10.1093/mnrasl/slaa097 , archivePrefix =. 2006.06684 , primaryClass =

2006 arXiv
[78]

Nature Astronomy , keywords =

Observing black holes spin. Nature Astronomy , keywords =. doi:10.1038/s41550-018-0665-z , archivePrefix =. 1903.11704 , primaryClass =

1903 arXiv
[79]

, keywords =

Measuring Black Hole Spin Using X-Ray Reflection Spectroscopy. , keywords =. doi:10.1007/s11214-013-0006-6 , archivePrefix =. 1302.3260 , primaryClass =

arXiv
[80]

, keywords =

AT 2019avd: a novel addition to the diverse population of nuclear transients. , keywords =. doi:10.1051/0004-6361/202039681 , archivePrefix =. 2101.08760 , primaryClass =

arXiv
[81]

, keywords =

X-ray spectra and time variability of active galactic nuclei. , keywords =. doi:10.1146/annurev.aa.31.090193.003441 , adsurl =
[82]

, keywords =

Composite Quasar Spectra from the Sloan Digital Sky Survey. , keywords =. doi:10.1086/321167 , archivePrefix =. astro-ph/0105231 , primaryClass =

arXiv
[83]

, keywords =

Radio Properties of Tidal Disruption Events. , keywords =. doi:10.1007/s11214-020-00702-w , archivePrefix =. 2006.01159 , primaryClass =

2006 arXiv
[84]

, keywords =

A New Class of Changing-look LINERs. , keywords =. doi:10.3847/1538-4357/ab3a38 , archivePrefix =. 1904.10973 , primaryClass =

1904 arXiv
[85]

Major AGN flares

Understanding extreme quasar optical variability with CRTS - I. Major AGN flares. , keywords =. doi:10.1093/mnras/stx1456 , archivePrefix =. 1706.03079 , primaryClass =

arXiv
[86]

arXiv e-prints , keywords =

A Family Tree of Optical Transients from Narrow-Line Seyfert 1 Galaxies. arXiv e-prints , keywords =
[87]

, keywords =

Discovery of 21 New Changing-look AGNs in the Northern Sky. , keywords =. doi:10.3847/1538-4357/aaca3a , archivePrefix =. 1711.08122 , primaryClass =

arXiv
[88]

, keywords =

The Typecasting of Active Galactic Nuclei: Mrk 590 no Longer Fits the Role. , keywords =. doi:10.1088/0004-637X/796/2/134 , archivePrefix =. 1404.4879 , primaryClass =

arXiv
[89]

, keywords =

A systematic search for changing-look quasars in SDSS. , keywords =. doi:10.1093/mnras/stv2997 , archivePrefix =. 1509.08393 , primaryClass =

arXiv
[90]

, keywords =

A search for changing-look AGN in the Grossan catalog. , keywords =. doi:10.1051/0004-6361:20053389 , archivePrefix =. astro-ph/0507323 , primaryClass =

arXiv
[91]

, keywords =

An X-ray spectral study of 24 type 1 active galactic nuclei. , keywords =. doi:10.1093/mnras/286.3.513 , archivePrefix =. astro-ph/9610127 , primaryClass =

arXiv
[92]

, keywords =

The Emission-Line Properties of Low-Redshift Quasi-stellar Objects. , keywords =. doi:10.1086/191661 , adsurl =

doi
[93]

, keywords =

Ultraluminous Infrared Galaxies and the Origin of Quasars. , keywords =. doi:10.1086/165983 , adsurl =

doi
[94]

, keywords =

Electromagnetic extraction of energy from Kerr black holes. , keywords =. doi:10.1093/mnras/179.3.433 , adsurl =

doi
[95]

, keywords =

A Fundamental Plane of black hole activity. , keywords =. doi:10.1046/j.1365-2966.2003.07017.x , archivePrefix =. astro-ph/0305261 , primaryClass =

2003
[96]

, keywords =

Observational Evidence of Active Galactic Nuclei Feedback. , keywords =. doi:10.1146/annurev-astro-081811-125521 , archivePrefix =. 1204.4114 , primaryClass =

arXiv
[97]

, keywords =

Revisiting the Unified Model of Active Galactic Nuclei. , keywords =. doi:10.1146/annurev-astro-082214-122302 , archivePrefix =. 1505.00811 , primaryClass =

arXiv
[98]

, keywords =

Galaxies hosting an active galactic nucleus: a view from the CALIFA survey. , keywords =. 2020. doi:10.1093/mnras/staa008 , archivePrefix =. 2001.00099 , primaryClass =

2020 arXiv
[99]

, keywords =

The Field X-ray AGN Fraction to z = 0.7 from the Chandra Multiwavelength Project and the Sloan Digital Sky Survey. , keywords =. doi:10.1088/0004-637X/723/2/1447 , archivePrefix =. 1004.1638 , primaryClass =

arXiv
[100]

Ground-based and Airborne Instrumentation for Astronomy V , year = 2014, editor =

SPRAT: Spectrograph for the Rapid Acquisition of Transients. Ground-based and Airborne Instrumentation for Astronomy V , year = 2014, editor =. doi:10.1117/12.2055117 , adsurl =

2014 doi
[101]

, keywords =

ASASSN-14ko is a Periodic Nuclear Transient in ESO 253-G003. , keywords =. doi:10.3847/1538-4357/abe38d , archivePrefix =. 2009.03321 , primaryClass =

2009 arXiv
[102]

The Astronomer's Telegram , keywords =

Classification of ASASSN-20hx as a Tidal Disruption Event Candidate. The Astronomer's Telegram , keywords =
[103]

, keywords =

A Swift Fix for Nuclear Outbursts. , keywords =. doi:10.3847/1538-4357/abe4d8 , archivePrefix =. 2012.08521 , primaryClass =

2012 arXiv
[104]

Nature Astronomy , keywords =

A new class of flares from accreting supermassive black holes. Nature Astronomy , keywords =. doi:10.1038/s41550-018-0661-3 , archivePrefix =. 1901.03731 , primaryClass =

1901 arXiv
[105]

, keywords =

Shocked jets in CCSNe can power the zoo of fast blue optical transients. , keywords =. doi:10.1093/mnras/stac910 , archivePrefix =. 2201.04636 , primaryClass =

arXiv
[106]

, keywords =

A Population Study of the Radio Emission of Fast Blue Optical Transients. , keywords =. doi:10.3847/1538-4357/acbb04 , archivePrefix =. 2301.06403 , primaryClass =

arXiv
[107]

, keywords =

Luminous Fast Blue Optical Transients and Type Ibn/Icn SNe from Wolf-Rayet/Black Hole Mergers. , keywords =. doi:10.3847/1538-4357/ac6d59 , archivePrefix =. 2203.04331 , primaryClass =

arXiv
[108]

, keywords =

Luminous fast blue optical transients as very massive star core-collapse events. , keywords =. doi:10.1051/0004-6361/202557545 , archivePrefix =. 2510.03402 , primaryClass =
[109]

, keywords =

An Embedded X-Ray Source Shines through the Aspherical AT 2018cow: Revealing the Inner Workings of the Most Luminous Fast-evolving Optical Transients. , keywords =. doi:10.3847/1538-4357/aafa01 , archivePrefix =. 1810.10720 , primaryClass =

arXiv
[110]

Nature Astronomy , keywords =

Observational properties of extreme supernovae. Nature Astronomy , keywords =. doi:10.1038/s41550-019-0854-4 , archivePrefix =. 1908.02314 , primaryClass =

1908 arXiv
[111]

Nature Astronomy , keywords =

A fast-rising tidal disruption event from a candidate intermediate-mass black hole. Nature Astronomy , keywords =. doi:10.1038/s41550-022-01811-y , archivePrefix =. 2209.00018 , primaryClass =

arXiv
[112]

, keywords =

1ES 1927+654: An AGN Caught Changing Look on a Timescale of Months. , keywords =. doi:10.3847/1538-4357/ab39e4 , archivePrefix =. 1903.11084 , primaryClass =

1927 arXiv
[113]

, keywords =

Accretion disc cooling and narrow absorption lines in the tidal disruption event AT 2019dsg. , keywords =. doi:10.1093/mnras/stab851 , archivePrefix =. 2012.10195 , primaryClass =

2012 arXiv
[114]

, keywords =

Rapid Accretion State Transitions following the Tidal Disruption Event AT2018fyk. , keywords =. doi:10.3847/1538-4357/abf5e2 , archivePrefix =. 2101.04692 , primaryClass =

arXiv
[115]

The Astronomer's Telegram , keywords =

NICER X-ray observations of the Tidal Disruption Event (TDE) candidate AT2020ocn. The Astronomer's Telegram , keywords =
[116]

The Astronomer's Telegram , keywords =

X-ray flaring of the nuclear transient AT2019avd/eRASStJ082337+042303/ZTF19aaiqmgl: Swift and NICER observations. The Astronomer's Telegram , keywords =
[117]

The Astronomer's Telegram , keywords =

NICER X-ray observations of the tidal disruption event AT2020ksf/ZTF20abgbdpr/Gaia20cjk/SRGeJ213527.3-181634. The Astronomer's Telegram , keywords =
[118]

, keywords =

The 450 Day X-Ray Monitoring of the Changing-look AGN 1ES 1927+654. , keywords =. doi:10.3847/1538-4365/abe94b , archivePrefix =. 2102.05666 , primaryClass =

1927 arXiv
[119]

Nature Communications , year = 2020, month = nov, volume =

X-ray flares from the stellar tidal disruption by a candidate supermassive black hole binary. Nature Communications , year = 2020, month = nov, volume =. doi:10.1038/s41467-020-19675-z , adsurl =

2020 doi
[120]

Space Telescope and Optical Reverberation Mapping Project. II. Swift and HST Reverberation Mapping of the Accretion Disk of NGC 5548. , keywords =. doi:10.1088/0004-637X/806/1/129 , archivePrefix =. 1501.05951 , primaryClass =

arXiv
[121]

, keywords =

Discovery and follow-up of the unusual nuclear transient OGLE17aaj. , keywords =. doi:10.1051/0004-6361/201833682 , archivePrefix =. 1901.03718 , primaryClass =

1901 arXiv
[122]

arXiv e-prints , keywords =

The Young Supernova Experiment: Survey Goals, Overview, and Operations. arXiv e-prints , keywords =
[123]

, keywords =

The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra. , keywords =. doi:10.3847/1538-4365/ab929e , archivePrefix =. 1912.02905 , primaryClass =

1912
[124]

, keywords =

Optical-Ultraviolet Tidal Disruption Events. , keywords =. doi:10.1007/s11214-020-00753-z , archivePrefix =. 2008.05461 , primaryClass =

2008 arXiv
[125]

arXiv e-prints , keywords =

Fast Optical Transients from Stellar-Mass Black Hole Tidal Disruption Events in Young Star Clusters. arXiv e-prints , keywords =
[126]

, keywords =

UBVRI passbands. , keywords =. doi:10.1086/132749 , adsurl =

doi
[127]

, keywords =

The Koala: A Fast Blue Optical Transient with Luminous Radio Emission from a Starburst Dwarf Galaxy at z = 0.27. , keywords =. doi:10.3847/1538-4357/ab8bcf , archivePrefix =. 2003.01222 , primaryClass =

2003 arXiv
[128]

arXiv e-prints , keywords =

Application of The Wind-Driven Model to A Sample of Tidal Disruption Events. arXiv e-prints , keywords =
[129]

, keywords =

A Mildly Relativistic Outflow from the Energetic, Fast-rising Blue Optical Transient CSS161010 in a Dwarf Galaxy. , keywords =. doi:10.3847/2041-8213/ab8cc7 , archivePrefix =. 2003.10503 , primaryClass =

2003 arXiv
[130]

, keywords =

The Destruction and Recreation of the X-Ray Corona in a Changing-look Active Galactic Nucleus. , keywords =. doi:10.3847/2041-8213/ab91a1 , archivePrefix =. 2007.07275 , primaryClass =

2007 arXiv
[131]

doi:10.5479/ADS/bib/2012ivoa.rept.1015R , adsurl =

SVO Filter Profile Service Version 1.0. doi:10.5479/ADS/bib/2012ivoa.rept.1015R , adsurl =

doi
[132]

, keywords =

Separating line emission from star formation, shocks, and AGN ionization in NGC 1068. , keywords =. doi:10.1093/mnras/stz1611 , archivePrefix =. 1906.07907 , primaryClass =

1906 arXiv
[133]

, keywords =

Discovery and follow-up of ASASSN-19dj: an X-ray and UV luminous TDE in an extreme post-starburst galaxy. , keywords =. doi:10.1093/mnras/staa3170 , archivePrefix =. 2006.06690 , primaryClass =

2006 arXiv
[134]

arXiv e-prints , keywords =

An outflow powers the optical rise of the nearby, fast-evolving tidal disruption event AT2019qiz. arXiv e-prints , keywords =
[135]

HOTPANTS: High Order Transform of PSF ANd Template Subtraction
[136]

arXiv e-prints , keywords =

Design and operation of the ATLAS Transient Science Server. arXiv e-prints , keywords =
[137]

The Varieties of Disruptions

Tidal Disruptions of Main Sequence Stars -- V. The Varieties of Disruptions. arXiv e-prints , keywords =
[138]

Observable Quantities and their Dependence on Stellar and Black Hole Mass

Tidal Disruptions of Main Sequence Stars -- I. Observable Quantities and their Dependence on Stellar and Black Hole Mass. arXiv e-prints , keywords =
[139]

, keywords =

The Post-starburst Evolution of Tidal Disruption Event Host Galaxies. , keywords =. doi:10.3847/1538-4357/835/2/176 , archivePrefix =. 1609.04755 , primaryClass =

arXiv
[140]

, keywords =

The evolutionary sequence of post-starburst galaxies. , keywords =. doi:10.1093/mnras/stx2034 , archivePrefix =. 1708.03168 , primaryClass =

arXiv
[141]

, keywords =

A panchromatic survey of post-starburst mergers: searching for feedback. , keywords =. doi:10.1093/mnras/stu141 , archivePrefix =. 1401.4830 , primaryClass =

arXiv
[142]

, keywords =

A comprehensive classification of galaxies in the Sloan Digital Sky Survey: how to tell true from fake AGN?. , keywords =. doi:10.1111/j.1365-2966.2011.18244.x , archivePrefix =. 1012.4426 , primaryClass =

2011
[143]

, keywords =

The Structure of Tidal Disruption Event Host Galaxies on Scales of Tens to Thousands of Parsecs. , keywords =. doi:10.3847/1538-4357/ab7450 , archivePrefix =. 2002.02498 , primaryClass =

2002
[144]

arXiv e-prints , keywords =

The Tidal Disruption Event AT 2018hyz I: Double-peaked emission lines and a flat Balmer decrement. arXiv e-prints , keywords =
[145]

arXiv e-prints , keywords =

Prompt Accretion Disk Formation in an X-Ray Faint Tidal Disruption Event. arXiv e-prints , keywords =
[146]

, keywords =

A New Method to Calibrate the Magnitudes of Type Ia Supernovae at Maximum Light. , keywords =. doi:10.1086/504307 , archivePrefix =. astro-ph/0603407 , primaryClass =

arXiv
[147]

, keywords =

Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds. , keywords =. doi:10.1086/305772 , archivePrefix =. astro-ph/9710327 , primaryClass =

arXiv
[148]

, keywords =

K-Corrections and Spectral Templates of Type Ia Supernovae. , keywords =. doi:10.1086/518232 , archivePrefix =. astro-ph/0703529 , primaryClass =

arXiv
[149]

, keywords =

On the Mass and Luminosity Functions of Tidal Disruption Flares: Rate Suppression due to Black Hole Event Horizons. , keywords =. doi:10.3847/1538-4357/aa998e , archivePrefix =. 1707.03458 , primaryClass =

arXiv
[150]

, keywords =

Elliptical Accretion and Low Luminosity from High Accretion Rate Stellar Tidal Disruption Events. , keywords =. doi:10.1093/mnras/stx117 , archivePrefix =. 1508.02389 , primaryClass =

arXiv
[151]

Journal of High Energy Astrophysics , keywords =

Recent developments in the theory of tidal disruption events. Journal of High Energy Astrophysics , keywords =. doi:10.1016/j.jheap.2015.04.003 , adsurl =

2015 doi
[152]

, keywords =

The Carnegie Supernova Project: Analysis of the First Sample of Low-Redshift Type-Ia Supernovae. , keywords =. doi:10.1088/0004-6256/139/1/120 , archivePrefix =. 0910.3317 , primaryClass =

arXiv
[153]

, year = 2006, volume =

The Large Binocular Telescope. , year = 2006, volume =. doi:10.1117/12.669832 , adsurl =

2006 doi
[154]

, year = 2010, volume =

The multi-object double spectrographs for the Large Binocular Telescope. , year = 2010, volume =. doi:10.1117/12.857215 , adsurl =

2010 doi
[155]

, keywords =

The Carnegie Supernova Project: Light-curve Fitting with SNooPy. , keywords =. doi:10.1088/0004-6256/141/1/19 , archivePrefix =. 1010.4040 , primaryClass =

arXiv
[156]

, keywords =

Absolute-magnitude Distributions of Supernovae. , keywords =. doi:10.1088/0004-6256/147/5/118 , archivePrefix =. 1403.5755 , primaryClass =

arXiv
[157]

arXiv e-prints , keywords =

The Rise and Fall of ASASSN-18pg: Following a TDE from Early To Late Times. arXiv e-prints , keywords =
[158]

, keywords =

Seventeen Tidal Disruption Events from the First Half of ZTF Survey Observations: Entering a New Era of Population Studies. , keywords =. doi:10.3847/1538-4357/abc258 , archivePrefix =. 2001.01409 , primaryClass =

2001 arXiv
[159]

arXiv e-prints , keywords =

Peak-Luminosity/Decline-Rate Relationship for Tidal Disruption Events. arXiv e-prints , keywords =
[160]

, keywords =

Prompt Radiation and Mass Outflows from the Stream-Stream Collisions of Tidal Disruption Events. , keywords =. doi:10.3847/0004-637X/830/2/125 , archivePrefix =. 1603.07733 , primaryClass =

arXiv
[161]

, keywords =

Long-term stream evolution in tidal disruption events. , keywords =. doi:10.1093/mnras/stw2547 , archivePrefix =. 1608.00970 , primaryClass =

arXiv
[162]

, keywords =

Self-intersection of the fallback stream in tidal disruption events. , keywords =. doi:10.1093/mnras/stz3405 , archivePrefix =. 1904.12018 , primaryClass =

1904 arXiv
[163]

The Astronomer's Telegram , keywords =

Low-frequency detection of Tidal Disruption Event AT2019azh with the uGMRT. The Astronomer's Telegram , keywords =. 2019

2019
[164]

The Astronomer's Telegram , keywords =

Classification of AT2019azh as an Eddington-limited tidal disruption flare. The Astronomer's Telegram , keywords =
[165]

, keywords =

Black hole masses of tidal disruption event host galaxies II. , keywords =. doi:10.1093/mnras/stz1602 , archivePrefix =. 1902.04077 , primaryClass =

1902 arXiv
[166]

, keywords =

The first XMM-Newton slew survey catalogue: XMMSL1. , keywords =. doi:10.1051/0004-6361:20079193 , archivePrefix =. 0801.3732 , primaryClass =

arXiv
[167]

, keywords =

Ultrafast outflow in tidal disruption event ASASSN-14li. , keywords =. doi:10.1093/mnras/stx3004 , archivePrefix =. 1711.06090 , primaryClass =

arXiv
[168]

arXiv e-prints , keywords =

The UV/optical peak and X-ray brightening in TDE candidate AT2019azh: A case of stream-stream collision and delayed accretion. arXiv e-prints , keywords =. 2019

2019
[169]

, keywords =

Radio emission from the unbound debris of tidal disruption events. , keywords =. 2019. doi:10.1093/mnras/stz1567 , archivePrefix =. 1903.02575 , primaryClass =

2019 arXiv
[170]

The Astronomer's Telegram , keywords =

Title: X-ray non-detection of TDE Candidate AT2019qiz using the Swift XRT. The Astronomer's Telegram , keywords =. 2019

2019
[171]

arXiv e-prints , keywords =

Relativistic reflection and reverberation in GX 339-4 with NICER and NuSTAR. arXiv e-prints , keywords =. 2019

2019
[172]

The Astronomer's Telegram , keywords =

NICER observations of late-time X-ray brightening of the tidal disruption event candidate AT2019azh. The Astronomer's Telegram , keywords =. 2019

2019
[173]

, keywords =

HI4PI: A full-sky H I survey based on EBHIS and GASS. , keywords =. 2016. doi:10.1051/0004-6361/201629178 , archivePrefix =. 1610.06175 , primaryClass =

2016 arXiv
[174]

Constraining the Neutron Star Mass─Radius Relation and Dense Matter Equation of State with NICER. I. The Millisecond Pulsar X-Ray Data Set. , keywords =. 2019. doi:10.3847/2041-8213/ab53eb , archivePrefix =. 1912.05706 , primaryClass =

2019 arXiv
[175]

, keywords =

A Dependence of the Tidal Disruption Event Rate on Global Stellar Surface Mass Density and Stellar Velocity Dispersion. , keywords =. 2018. doi:10.3847/1538-4357/aaa3fd , archivePrefix =. 1707.02986 , primaryClass =

2018 arXiv
[176]

, keywords =

Weighing Black Holes Using Tidal Disruption Events. , keywords =. 2019. doi:10.3847/1538-4357/ab010f , archivePrefix =. 1801.08221 , primaryClass =

2019 arXiv
[177]

, keywords =

Tidal disruptions by rotating black holes: effects of spin and impact parameter. , keywords =. 2019. doi:10.1093/mnras/stz1530 , archivePrefix =. 1903.09147 , primaryClass =

2019 arXiv
[178]

General Relativity and Gravitation , keywords =

Stellar tidal disruption events in general relativity. General Relativity and Gravitation , keywords =. 2019. doi:10.1007/s10714-019-2510-9 , archivePrefix =. 1801.10180 , primaryClass =

2019 arXiv
[179]

, keywords =

Tidal Disruption Events: The Role of Stellar Spin. , keywords =. 2019. doi:10.3847/1538-4357/aafd2f , archivePrefix =. 1901.03717 , primaryClass =

2019 arXiv
[180]

, keywords =

Partial Stellar Disruption by a Supermassive Black Hole: Is the Light Curve Really Proportional to t ^ -9/4 ?. , keywords =. 2019. doi:10.3847/2041-8213/ab412d , archivePrefix =. 1907.03034 , primaryClass =

2019 arXiv
[181]

, keywords =

Tidal Disruptions of Main-sequence Stars of Varying Mass and Age: Inferences from the Composition of the Fallback Material. , keywords =. 2018. doi:10.3847/1538-4357/aab5b8 , archivePrefix =. 1801.03497 , primaryClass =

2018 arXiv
[182]

, keywords =

The Tidal Disruption of Sun-like Stars by Massive Black Holes. , keywords =. 2019. doi:10.3847/2041-8213/ab379a , archivePrefix =. 1907.04859 , primaryClass =

2019 arXiv
[183]

, keywords =

Machine-learning-based Brokers for Real-time Classification of the LSST Alert Stream. , keywords =. 2018. doi:10.3847/1538-4365/aab781 , archivePrefix =. 1801.07323 , primaryClass =

2018 arXiv
[184]

, keywords =

The Zwicky Transient Facility Alert Distribution System. , keywords =. 2019. doi:10.1088/1538-3873/aae904 , archivePrefix =. 1902.02227 , primaryClass =

2019 arXiv
[185]

, keywords =

Machine Learning for the Zwicky Transient Facility. , keywords =. 2019. doi:10.1088/1538-3873/aaf3fa , archivePrefix =. 1902.01936 , primaryClass =

2019 arXiv
[186]

Astronomical Data Analysis Software and Systems XI, ASP Conference Proceedings, Vol

The TERAPIX Pipeline. Astronomical Data Analysis Software and Systems XI, ASP Conference Proceedings, Vol. 281. Edited by David A. Bohlender, Daniel Durand, and Thomas H. Handley. ISBN: 1-58381-124-9. ISSN: 1080-7926. San Francisco: Astronomical Society of the Pacific, 2002, p...

2002
[187]

, keywords =

DAOPHOT: A Computer Program for Crowded-Field Stellar Photometry. , keywords =. 1987. doi:10.1086/131977 , adsurl =

1987 doi
[188]

Summary of the astrometric, photometric, and survey properties

Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties. , keywords =. 2016. doi:10.1051/0004-6361/201629512 , archivePrefix =. 1609.04172 , primaryClass =

2016 arXiv
[189]

Astronomical Data Analysis Software and Systems XV ASP Conference Series, Vol

Automatic Astrometric and Photometric Calibration with SCAMP. Astronomical Data Analysis Software and Systems XV ASP Conference Series, Vol. 351, Proceedings of the Conference Held 2-5 October 2005 in San Lorenzo de El Escorial, Spain. Edited by Carlos Gabriel, Christophe Arvi...

2005
[190]

, keywords =

The Zwicky Transient Facility: Data Processing, Products, and Archive. , keywords =. 2019. doi:10.1088/1538-3873/aae8ac , archivePrefix =. 1902.01872 , primaryClass =

2019 arXiv
[191]

, keywords =

SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way, and Extra-Solar Planetary Systems. , keywords =. 2011. doi:10.1088/0004-6256/142/3/72 , archivePrefix =. 1101.1529 , primaryClass =

2011 arXiv
[193]

, keywords =

The host galaxies and classification of active galactic nuclei. , keywords =. 2006. doi:10.1111/j.1365-2966.2006.10859.x , archivePrefix =. astro-ph/0605681 , primaryClass =

2006
[194]

Dusty, Radiation Pressure-Dominated Photoionization. II. Multiwavelength Emission Line Diagnostics for Narrow-Line Regions. , keywords =. 2004. doi:10.1086/421114 , archivePrefix =. astro-ph/0404176 , primaryClass =

2004 arXiv
[195]

, keywords =

The Stellar Populations in the Central Parsecs of Galactic Bulges. , keywords =. 2005. doi:10.1086/428637 , archivePrefix =. astro-ph/0410220 , primaryClass =

2005 arXiv
[196]

, keywords =

Radio Observations of the Tidal Disruption Event XMMSL1 J0740-85. , keywords =. 2017. doi:10.3847/1538-4357/aa6192 , archivePrefix =. 1610.03861 , primaryClass =

2017 arXiv
[197]

, keywords =

CHANG-ES V: Nuclear Outflow in a Virgo Cluster Spiral after a Tidal Disruption Event. , keywords =. 2015. doi:10.1088/0004-637X/809/2/172 , archivePrefix =. 1507.00704 , primaryClass =

2015 arXiv
[198]

Science , keywords =

A radio jet from the optical and x-ray bright stellar tidal disruption flare ASASSN-14li. Science , keywords =. 2016. doi:10.1126/science.aad1182 , archivePrefix =. 1511.08803 , primaryClass =

2016 arXiv
[199]

, keywords =

Long-term radio and X-ray evolution of the tidal disruption event ASASSN-14li. , keywords =. 2018. doi:10.1093/mnras/sty077 , archivePrefix =. 1801.03094 , primaryClass =

2018 arXiv
[200]

Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray

The Neutron star Interior Composition ExploreR (NICER): an Explorer mission of opportunity for soft x-ray timing spectroscopy. Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray. Proceedings of the SPIE, Volume 8443, article id. 844313, 8 pp. (2012). , year = ...

2012 doi
[201]

, keywords =

The Fifteenth Data Release of the Sloan Digital Sky Surveys: First Release of MaNGA-derived Quantities, Data Visualization Tools, and Stellar Library. , keywords =. 2019. doi:10.3847/1538-4365/aaf651 , archivePrefix =. 1812.02759 , primaryClass =

2019 arXiv
[202]

, keywords =

The Fourth Data Release of the Sloan Digital Sky Survey. , keywords =. 2006. doi:10.1086/497917 , archivePrefix =. astro-ph/0507711 , primaryClass =

2006 arXiv
[203]

, keywords =

Supermassive black hole mass measurements for NGC 1300 and 2748 based on Hubble Space Telescope emission-line gas kinematics. , keywords =. 2005. doi:10.1111/j.1365-2966.2005.08904.x , archivePrefix =. astro-ph/0502573 , primaryClass =

2005
[204]

, keywords =

Hubble Space Telescope Spectroscopic Evidence for a 2 10 9 M _ sun Black Hole in NGC 3115. , keywords =. 1996. doi:10.1086/309950 , adsurl =

1996 doi
[205]

, keywords =

Narrowband HST Images of M87: Evidence for a Disk of Ionized Gas around a Massive Black Hole. , keywords =. 1994. doi:10.1086/187586 , adsurl =

1994 doi
[206]

, keywords =

Stellar Orbits around the Galactic Center Black Hole. , keywords =. 2005. doi:10.1086/427175 , archivePrefix =. astro-ph/0306130 , primaryClass =

2005 arXiv
[207]

, keywords =

The Black Hole Mass in M87 from Gemini/NIFS Adaptive Optics Observations. , keywords =. 2011. doi:10.1088/0004-637X/729/2/119 , archivePrefix =. 1101.1954 , primaryClass =

2011 arXiv
[208]

First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole. , keywords =. 2019. doi:10.3847/2041-8213/ab0ec7 , archivePrefix =. 1906.11238 , primaryClass =

2019 arXiv
[209]

, keywords =

An Open Catalog for Supernova Data. , keywords =. 2017. doi:10.3847/1538-4357/835/1/64 , archivePrefix =. 1605.01054 , primaryClass =

2017 arXiv
[210]

, keywords =

Spectral Classification of Emission-Line Galaxies. , keywords =. 1987. doi:10.1086/191166 , adsurl =

1987 doi
[211]

The Astronomer's Telegram , keywords =

Discovery of 10 ASAS-SN Supernovae. The Astronomer's Telegram , keywords =. 2019

2019
[212]

, keywords =

Image subtraction using a space-varying kernel. , keywords =. 2000. doi:10.1051/aas:2000214 , adsurl =

2000 doi
[213]

, keywords =

On the Black Hole Mass-Bulge Mass Relation. , keywords =. doi:10.1086/383567 , archivePrefix =. astro-ph/0402376 , primaryClass =

arXiv
[214]

, keywords =

A Fundamental Relation between Supermassive Black Holes and Their Host Galaxies. , keywords =. doi:10.1086/312838 , archivePrefix =. astro-ph/0006053 , primaryClass =

arXiv
[215]

American Astronomical Society Meeting Abstracts \#225 , year = "2015", series =

APASS - The Latest Data Release. American Astronomical Society Meeting Abstracts \#225 , year = "2015", series =

2015
[216]

Optically selected active galaxies

Starburst-AGN mixing - II. Optically selected active galaxies. , keywords =. 2014. doi:10.1093/mnras/stu1740 , archivePrefix =. 1408.5888 , primaryClass =

2014 arXiv
[217]

Science , keywords =

Luminous Supernovae. Science , keywords =. 2012. doi:10.1126/science.1203601 , archivePrefix =. 1208.3217 , primaryClass =

2012 arXiv
[218]

2019", month =

Lasair: The Transient Alert Broker for LSST:UK. Research Notes of the American Astronomical Society , year = "2019", month = "Jan", volume =. doi:10.3847/2515-5172/ab020f , adsurl =

2019 doi
[219]

, keywords =

Tidal Disruption Event Host Galaxies in the Context of the Local Galaxy Population. , keywords =. 2017. doi:10.3847/1538-4357/aa94c7 , archivePrefix =. 1707.01559 , primaryClass =

2017 arXiv
[220]

1955", month =

The Luminosity Function and Stellar Evolution. , year = "1955", month = "Jan", volume =. doi:10.1086/145971 , adsurl =

1955 doi
[221]

, keywords =

The Galaxy Evolution Explorer: A Space Ultraviolet Survey Mission. , keywords =. 2005. doi:10.1086/426387 , archivePrefix =. astro-ph/0411302 , primaryClass =

2005 arXiv
[222]

Naval Observatory Robotic Astrometric Telescope Catalog

The First U.S. Naval Observatory Robotic Astrometric Telescope Catalog. , keywords =. 2015. doi:10.1088/0004-6256/150/4/101 , archivePrefix =. 1508.04637 , primaryClass =

2015 arXiv
[223]

The Astronomer's Telegram , keywords =

Radio detection of the tidal disruption event AT2019azh. The Astronomer's Telegram , keywords =. 2019

2019
[224]

Scientific Reports , keywords =

Tidally disrupted stars as a possible origin of both cosmic rays and neutrinos at the highest energies. Scientific Reports , keywords =. 2018. doi:10.1038/s41598-018-29022-4 , archivePrefix =. 1711.03555 , primaryClass =

2018 arXiv
[225]

, keywords =

Tidal disruption jets of supermassive black holes as hidden sources of cosmic rays: Explaining the IceCube TeV-PeV neutrinos. , keywords =. 2016. doi:10.1103/PhysRevD.93.083005 , archivePrefix =. 1512.08596 , primaryClass =

2016 arXiv
[226]

arXiv e-prints , keywords =

Tidal disruption jets as the source of Ultra-High Energy Cosmic Rays. arXiv e-prints , keywords =. 2014

2014
[227]

, keywords =

A Huge Drop in the X-Ray Luminosity of the Nonactive Galaxy RX J1242.6-1119A, and the First Postflare Spectrum: Testing the Tidal Disruption Scenario. , keywords =. 2004. doi:10.1086/382046 , archivePrefix =. astro-ph/0402468 , primaryClass =

2004 arXiv
[228]

, keywords =

Chandra observations of five X-ray transient galactic nuclei. , keywords =. 2004. doi:10.1111/j.1365-2966.2004.07615.x , archivePrefix =. astro-ph/0401264 , primaryClass =

2004
[229]

, keywords =

Follow-Up Chandra Observations of Three Candidate Tidal Disruption Events. , keywords =. 2004. doi:10.1086/381937 , archivePrefix =. astro-ph/0402497 , primaryClass =

2004 arXiv
[230]

, keywords =

RX J1420.4+5334 - another tidal disruption event?. , keywords =. 2000

2000
[231]

, keywords =

Measurement of the Rate of Stellar Tidal Disruption Flares. , keywords =. 2014. doi:10.1088/0004-637X/792/1/53 , archivePrefix =. 1407.6425 , primaryClass =

2014 arXiv
[232]

, keywords =

Optical Discovery of Probable Stellar Tidal Disruption Flares. , keywords =. 2011. doi:10.1088/0004-637X/741/2/73 , archivePrefix =. 1009.1627 , primaryClass =

2011 arXiv
[233]

, keywords =

The Dynamics, Appearance, and Demographics of Relativistic Jets Triggered by Tidal Disruption of Stars in Quiescent Supermassive Black Holes. , keywords =. 2012. doi:10.1088/0004-637X/760/2/103 , archivePrefix =. 1205.1507 , primaryClass =

2012 arXiv
[234]

, keywords =

Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies. , keywords =. 2013. doi:10.1146/annurev-astro-082708-101811 , archivePrefix =. 1304.7762 , primaryClass =

2013 arXiv
[235]

, keywords =

Nuclear activity in nearby galaxies. , keywords =. 2008. doi:10.1146/annurev.astro.45.051806.110546 , archivePrefix =. 0803.2268 , primaryClass =

2008 arXiv
[236]

1995", month =

Inward Bound---The Search For Supermassive Black Holes In Galactic Nuclei. , year = "1995", month = "Jan", volume =. doi:10.1146/annurev.aa.33.090195.003053 , adsurl =

1995
[237]

, keywords =

The Demography of Massive Dark Objects in Galaxy Centers. , keywords =. 1998. doi:10.1086/300353 , archivePrefix =. astro-ph/9708072 , primaryClass =

1998 arXiv
[238]

, keywords =

The M- and M-L Relations in Galactic Bulges, and Determinations of Their Intrinsic Scatter. , keywords =. 2009. doi:10.1088/0004-637X/698/1/198 , archivePrefix =. 0903.4897 , primaryClass =

2009 arXiv
[239]

The Astronomer's Telegram , keywords =

Classification of AT2019azh as an Eddington-limited tidal disruption flare. The Astronomer's Telegram , keywords =. 2019

2019
[240]

The Astronomer's Telegram , keywords =

Spectroscopic observation of AT 2019azh by NUTS (NOT Un-biased Transient Survey). The Astronomer's Telegram , keywords =. 2019

2019
[241]

Transient Name Server Classification Report , keywords =

ePESSTO Transient Classification Report for 2019-02-26. Transient Name Server Classification Report , keywords =. 2019

2019
[242]

, keywords =

Discovery and Early Evolution of ASASSN-19bt, the First TDE Detected by TESS. , keywords =. 2019. doi:10.3847/1538-4357/ab3c66 , archivePrefix =. 1904.09293 , primaryClass =

2019 arXiv
[243]

, keywords =

PS18kh: A New Tidal Disruption Event with a Non-axisymmetric Accretion Disk. , keywords =. 2019. doi:10.3847/1538-4357/ab2ae1 , archivePrefix =. 1808.02890 , primaryClass =

2019 arXiv
[244]

The ASAS-SN bright supernova catalogue - IV. 2017. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stz073 , adsurl =

2017 doi
[245]

, archivePrefix = "arXiv", eprint =

The unusual late-time evolution of the tidal disruption event ASASSN-15oi. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/sty2273 , adsurl =

doi
[246]

The ASAS-SN bright supernova catalogue - III. 2016. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stx1544 , adsurl =

2016 doi
[247]

The ASAS-SN bright supernova catalogue - II. 2015. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stx057 , adsurl =

2015 doi
[248]

, archivePrefix = "arXiv", eprint =

Six months of multiwavelength follow-up of the tidal disruption candidate ASASSN-14li and implied TDE rates from ASAS-SN. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stv2486 , adsurl =

doi
[249]

, archivePrefix = "arXiv", eprint =

ASASSN-15oi: a rapidly evolving, luminous tidal disruption event at 216 Mpc. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stw2272 , adsurl =

doi
[250]

, archivePrefix = "arXiv", eprint =

Discovery and Observations of the Unusually Luminous Type-Defying II-P/II-L Supernova ASASSN-13co. , archivePrefix = "arXiv", eprint =
[251]

2013-2014

The ASAS-SN bright supernova catalogue - I. 2013-2014. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stw2273 , adsurl =

2013 doi
[252]

, archivePrefix = "arXiv", eprint =

Discovery and Observations of ASASSN-13db, an EX Lupi-type Accretion Event on a Low-mass T Tauri Star. , archivePrefix = "arXiv", eprint =. doi:10.1088/2041-8205/785/2/L35 , adsurl =

doi
[253]

, archivePrefix = "arXiv", eprint =

ASASSN-14ae: a tidal disruption event at 200 Mpc. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stu1922 , adsurl =

doi
[254]

The Astronomer's Telegram , keywords =

ASAS-SN Discovery of Two Likely Supernovae in PGC 67159 and PGC 55442. The Astronomer's Telegram , keywords =
[255]

, archivePrefix = "arXiv", eprint =

The unexpected, long-lasting, UV rebrightening of the superluminous supernova ASASSN-15lh. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stw3237 , adsurl =

doi
[256]

, archivePrefix = "arXiv", eprint =

Seeing Double: ASASSN-18bt Exhibits a Two-component Rise in the Early-time K2 Light Curve. , archivePrefix = "arXiv", eprint =. doi:10.3847/1538-4357/aaec79 , adsurl =

doi
[257]

, archivePrefix = "arXiv", eprint =

K2 Observations of SN 2018oh Reveal a Two-component Rising Light Curve for a Type Ia Supernova. , archivePrefix = "arXiv", eprint =. doi:10.3847/2041-8213/aaedb0 , adsurl =

doi
[258]

, archivePrefix = "arXiv", eprint =

The relative specific Type Ia supernovae rate from three years of ASAS-SN. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stz258 , adsurl =

doi
[259]

, archivePrefix = "arXiv", eprint =

Hello darkness my old friend: the fading of the nearby TDE ASASSN-14ae. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stw1928 , adsurl =

doi
[260]

, archivePrefix = "arXiv", eprint =

The Long Term Evolution of ASASSN-14li. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stx033 , adsurl =

doi
[261]

, archivePrefix = "arXiv", eprint =

The ultraviolet spectroscopic evolution of the low-luminosity tidal disruption event iPTF16fnl. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stx2372 , adsurl =

doi
[262]

, archivePrefix = "arXiv", eprint =

The Young and Bright Type Ia Supernova ASASSN-14lp: Discovery, Early-time Observations, First-light Time, Distance to NGC 4666, and Progenitor Constraints. , archivePrefix = "arXiv", eprint =. doi:10.3847/0004-637X/826/2/144 , adsurl =

doi
[263]

Science , archivePrefix = "arXiv", eprint =

ASASSN-15lh: A Highly Super-Luminous Supernova. Science , archivePrefix = "arXiv", eprint =
[264]

, archivePrefix = "arXiv", eprint =

MUSE Reveals a Recent Merger in the Post-starburst Host Galaxy of the TDE ASASSN-14li. , archivePrefix = "arXiv", eprint =. doi:10.3847/2041-8205/830/2/L32 , adsurl =

doi
[265]

, keywords =

Nebular spectra of 111 Type Ia supernovae disfavour single-degenerate progenitors. , keywords =. doi:10.1093/mnras/stz3390 , archivePrefix =. 1903.05115 , primaryClass =

1903 arXiv
[266]

, archivePrefix = "arXiv", eprint =

The TDE ASASSN-14li and Its Host Resolved at Parsec Scales with the EVN. , archivePrefix = "arXiv", eprint =. doi:10.3847/2041-8205/832/1/L10 , adsurl =

doi
[267]

ArXiv e-prints , archivePrefix = "arXiv", eprint =

DM Ori: A Young Star Occulted by a Disturbance in its Protoplanetary Disk. ArXiv e-prints , archivePrefix = "arXiv", eprint =
[268]

, keywords =

To TDE or not to TDE: the luminous transient ASASSN-18jd with TDE-like and AGN-like qualities. , keywords =. doi:10.1093/mnras/staa859 , archivePrefix =. 1910.01142 , primaryClass =

1910 arXiv
[269]

, archivePrefix = "arXiv", eprint =

Total eclipse of the heart: the AM CVn Gaia14aae/ASSASN-14cn. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stv1224 , adsurl =

doi
[270]

ArXiv e-prints , archivePrefix = "arXiv", eprint =

Return of the King: Time-Series Photometry of FO Aquarii's Initial Recovery from its Unprecedented 2016 Low State. ArXiv e-prints , archivePrefix = "arXiv", eprint =

2016
[271]

, archivePrefix = "arXiv", eprint =

Gamma-Rays from the Quasar PKS 1441+25: Story of an Escape. , archivePrefix = "arXiv", eprint =. doi:10.1088/2041-8205/815/2/L22 , adsurl =

doi
[272]

, archivePrefix = "arXiv", eprint =

SN 2015BN: A Detailed Multi-wavelength View of a Nearby Superluminous Supernova. , archivePrefix = "arXiv", eprint =. doi:10.3847/0004-637X/826/1/39 , adsurl =

doi
[273]

ArXiv e-prints , archivePrefix = "arXiv", eprint =

Reverberation Mapping of Optical Emission Lines in Five Active Galaxies. ArXiv e-prints , archivePrefix = "arXiv", eprint =
[274]

, archivePrefix = "arXiv", eprint =

Type-Ia Supernova Rates to Redshift 2.4 from CLASH: The Cluster Lensing And Supernova Survey with Hubble. , archivePrefix = "arXiv", eprint =. doi:10.1088/0004-637X/783/1/28 , adsurl =

doi
[275]

The Astronomer's Telegram , keywords =

ASAS-SN Discovery of A Probable Supernova in 2MASX J20390918-3045201. The Astronomer's Telegram , keywords =
[276]

The Astronomer's Telegram , keywords =

PESSTO spectroscopic classification of optical transients. The Astronomer's Telegram , keywords =
[277]

The Astronomer's Telegram , keywords =

SCAT Classifications of 5 Supernovae with the UH88/SNIFS. The Astronomer's Telegram , keywords =
[278]

, archivePrefix = "arXiv", eprint =

iPTF16fnl: A Faint and Fast Tidal Disruption Event in an E+A Galaxy. , archivePrefix = "arXiv", eprint =. doi:10.3847/1538-4357/aa7579 , adsurl =

doi
[279]

, keywords =

Abundance anomalies in tidal disruption events. , keywords =. 2016. doi:10.1093/mnras/stw267 , archivePrefix =. 1512.03065 , primaryClass =

2016 arXiv
[280]

, eprint =

X-Ray Luminosity Function and Total Luminosity of Low-Mass X-Ray Binaries in Early-Type Galaxies. , eprint =. doi:10.1086/422210 , adsurl =

doi
[281]

ArXiv e-prints , archivePrefix = "arXiv", eprint =

The Eruption of the Candidate Young Star ASASSN-15qi. ArXiv e-prints , archivePrefix = "arXiv", eprint =
[282]

, archivePrefix = "arXiv", eprint =

Disc formation from tidal disruptions of stars on eccentric orbits by Schwarzschild black holes. , archivePrefix = "arXiv", eprint =. doi:10.1093/mnras/stv2411 , adsurl =

doi
[283]

, keywords =

The Intermediate-line Region in Active Galactic Nuclei. , keywords =. 2016. doi:10.3847/0004-637X/831/1/68 , archivePrefix =. 1606.00284 , primaryClass =

2016 arXiv
[284]

arXiv e-prints , archivePrefix = "arXiv", eprint =

Discovery of Highly Blueshifted Broad Balmer and Metastable Helium Absorption Lines in a Tidal Disruption Event. arXiv e-prints , archivePrefix = "arXiv", eprint =
[285]

, keywords =

Stellar disruption by a supermassive black hole: is the light curve really proportional to t ^ -5/3 ?. , keywords =. 2009. doi:10.1111/j.1365-2966.2008.14049.x , archivePrefix =. 0810.1288 , primaryClass =

2009
[286]

A dynamical analysis of the most massive cluster in the Great Attractor

The Norma cluster (ACO 3627) - I. A dynamical analysis of the most massive cluster in the Great Attractor. , archivePrefix = "arXiv", eprint =. doi:10.1111/j.1365-2966.2007.12571.x , adsurl =

2007
[287]

, archivePrefix = "arXiv", eprint =

The Zwicky Transient Facility: System Overview, Performance, and First Results. , archivePrefix = "arXiv", eprint =. doi:10.1088/1538-3873/aaecbe , adsurl =

doi
[288]

, archivePrefix = "arXiv", eprint =

The Transiting Exoplanet Survey Satellite: Simulations of Planet Detections and Astrophysical False Positives. , archivePrefix = "arXiv", eprint =. doi:10.1088/0004-637X/809/1/77 , adsurl =

doi
[289]

, year = 2015, month = may, volume = 521, pages =

No signature of ejecta interaction with a stellar companion in three type Ia supernovae. , year = 2015, month = may, volume = 521, pages =. doi:10.1038/nature14455 , adsurl =

2015 doi
[290]

, archivePrefix = "arXiv", eprint =

Shock Breakout and Early Light Curves of Type II-P Supernovae Observed with Kepler. , archivePrefix = "arXiv", eprint =. doi:10.3847/0004-637X/820/1/23 , adsurl =

doi
[291]

Transient Name Server AstroNote , keywords =

The Young Supernova Experiment - Survey Announcement and First Discoveries. Transient Name Server AstroNote , keywords =
[292]

, keywords =

Evidence for rapid disc formation and reprocessing in the X-ray bright tidal disruption event candidate AT 2018fyk. , keywords =. 2019. doi:10.1093/mnras/stz1976 , archivePrefix =. 1903.12203 , primaryClass =

2019 arXiv
[293]

The Astronomer's Telegram , keywords =

ASASSN-19bt: Discovery of A Possible TDE in the TESS Field. The Astronomer's Telegram , keywords =
[294]

The Carnegie-Spitzer-IMACS Redshift Survey of Galaxy Evolution since z = 1.5. I. Description and Methodology. , archivePrefix = "arXiv", eprint =. doi:10.1088/0004-637X/783/2/110 , adsurl =

doi
[295]

, archivePrefix = "arXiv", eprint =

ASASSN-16ae: A Powerful White-light Flare on an Early-L Dwarf. , archivePrefix = "arXiv", eprint =. doi:10.3847/2041-8205/828/2/L22 , adsurl =

doi
[296]

Philosophical Transactions of the Royal Society of London Series A , year = 2013, month = apr, volume = 371, pages =

Transient astronomy with the Gaia satellite. Philosophical Transactions of the Royal Society of London Series A , year = 2013, month = apr, volume = 371, pages =. doi:10.1098/rsta.2012.0239 , adsurl =

2013
[297]

Journal of Astronomical Telescopes, Instruments, and Systems , year = 2015, month = jan, volume = 1, number = 1, eid =

Transiting Exoplanet Survey Satellite (TESS). Journal of Astronomical Telescopes, Instruments, and Systems , year = 2015, month = jan, volume = 1, number = 1, eid =. doi:10.1117/1.JATIS.1.1.014003 , adsurl =

2015 doi
[298]

Ground-based Instrumentation for Astronomy , year = 2004, series =

The Goodman spectrograph. Ground-based Instrumentation for Astronomy , year = 2004, series =. doi:10.1117/12.550069 , adsurl =

2004 doi
[299]

Publications of the Astronomical Society of Australia , keywords =

SkyMapper Southern Survey: First Data Release (DR1). Publications of the Astronomical Society of Australia , keywords =. 2018. doi:10.1017/pasa.2018.5 , archivePrefix =. 1801.07834 , primaryClass =

2018 arXiv
[300]

arXiv e-prints , archivePrefix = "arXiv", eprint =

Early Time Light Curves of 18 Bright Type Ia Supernovae Observed with TESS. arXiv e-prints , archivePrefix = "arXiv", eprint =

Pith tools

Reviewed August 15, 2026 · model on record in the stance chip above.

[1] [1]

doi:10.26131/IRSA144 , url =

NEOWISE-R Single Exposure (L1b) Source Table , publisher =. doi:10.26131/IRSA144 , url =

doi:10.26131/irsa144

[2] [2]

, keywords =

Relations between Central Black Hole Mass and Total Galaxy Stellar Mass in the Local Universe. , keywords =. doi:10.1088/0004-637X/813/2/82 , archivePrefix =. 1508.06274 , primaryClass =

arXiv

[3] [3]

, keywords =

The SPHEREx Satellite Mission. , keywords =. doi:10.3847/1538-4357/ae2be2 , archivePrefix =. 2511.02985 , primaryClass =

arXiv

[4] [4]

The Open Journal of Astrophysics , keywords =

Unraveling the Nature of the Nuclear Transient AT2020adpi. The Open Journal of Astrophysics , keywords =. doi:10.33232/001c.151453 , archivePrefix =. 2509.03593 , primaryClass =

arXiv

[5] [5]

, keywords =

Possible power source of Seyfert galaxies and QSOs. , keywords =. doi:10.1038/254295a0 , adsurl =

doi:10.1038/254295a0

[6] [6]

, year = 2003, month = jan, volume =

Quantitative Spectroscopy of Photoionized Clouds. , year = 2003, month = jan, volume =. doi:10.1146/annurev.astro.41.011802.094836 , adsurl =

arXiv 2003

[7] [7]

2025 , eprint=

A Time-Dependent Solution for GSN 069 Disk Evolution and the Nature of Long-Lived Tidal Disruption Events , author=. 2025 , eprint=

2025

[8] [9]

and McKernan, Barry and Ford, K

Graham, Matthew J. and McKernan, Barry and Ford, K. E. Saavik and Stern, Daniel and Cantiello, Matteo and Drake, Andrew J. and Ding, Yuanze and Kasliwal, Mansi and Koss, Mike and Margutti, Raffaella and Rose, Sam and Somalwar, Jean and Wiseman, Phil and Djorgovski, S. G. and Veres, Patrik M. and Bellm, Eric C. and Chen, Tracy X. and Groom, Steven L. and K...

doi:10.1038/s41