Discovery of PSR J0125-5854, a 24 ms pulsar in a binary with orbital period ~834 days, low eccentricity, and likely helium white dwarf companion.
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- method wards et al. 2006) v2024.12.1 to update the more accu- rate ephemeris of the source. Times of arrival (ToAs) were derived throughZ 2 searching, with the minimum phase in each profile serving as the ToA for the corre- sponding observation (Ge et al. 2012, 2019; Younes et al. 2020; Peng et al. 2026). For spectral analysis, we per- formed fitting using XSPEC (Arnaud 1996) v12.14.1, as part of HEASoft v6.34, which allowed us to model and analyze the spectra comprehensively. NICER data that partly ov
- method CXOU J191238.0+101043 is flatter than a single Gaussian function in radii larger than 5. ′′0. We then extracted the Chandra spectra from a 19. ′′0 radius circle centered on these sources. We performed a simple phenomenological fit with a power-law model in the 1-5 keV band, where the background is nearly negligible. We used XSPEC version 12.14.1 (K. A. Arnaud 1996) for the spectroscopy. The derived flux in the 2-10 keV band and power-law index are ∼1.5×10 −14 erg s −1 cm−2 and∼2.6 for CXOU J1912
- method 2025) indicate that the inclusion of DDO51 can substantially reduce the Teff-logg degeneracy inherent to broadband-only configurations. While the present work focuses on the data release and calibration of the DDO51 band, these results illustrate the expected role of DDO51 as the primary gravity-sensitive component of the SAGES system. The primary science drivers for the SAGES DDO51 observations include: (1) photometric pre-selection of giant stars for spectroscopic follow-up surveys; (2) large-
- method spectrum of 2CXO J0507 clearly shows hydrogen emis- sion lines and signatures of an M-dwarf donor (see Fig- ure 2), inconsistent with the helium-dominated donor, like in AM CVns (Ramsay et al. 2018) or helium CVs (Green et al. 2020). We performed additional Lomb- Scargle analysis using a two-term sinusoidal model to search for periodicity. We detected the strongest peak atP= 140.3211(2) min≈2.34 hr, which exceeds the 3σconfidence level. We identify this period as the or- bital period (orbital fr
- method the standardtardisradiation-field and plasma deter- 9 https://github.com/tardis-sn/tardis/tree/release-2025.03.23 Spectral Inference of SN 2014L5 T able 1.Model parameters and prior distributions tardisSample Grid a Inference Prior Parameter Distribution Range Parameter Distribution Range SN t[days] Uniform [8, 36] t[days] Uniform [8, 36] L[erg s −1] Log-uniform [6.31e+41, 3.98e+42] L[erg s −1] Log-uniform [6.31e+41, 3.98e+42] Densityb ρ0 [g cm−3 ] Log-uniform [3.16e-11, 1e-8] αρ c Uniform [-10,
- method To determine uncertainties, we bootstrap the datasets 10 5000 times for each model and epoch. In order to calculate flux as a function of wavelength, we employ an optically thin dust-emission model, Fν = κM d2 SN Bλ(λ, T).(3) We taked SN ≈36.0Mpc (Section 4.1), andB λ(λ, T)is the Planck blackbody function. The final parameter is the opac- ity, κ= 3 4ρa Qabs(λ),(4) whereQ abs is the absorption efficiency,ρis the density of the grain material, andais the average grain radius. We apply the optical
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representative citing papers
JWST data show multiphase filaments feeding a circumnuclear disk that mediates accretion onto the black hole in NGC 4696, closing the AGN feedback loop.
Presents a fully photometric framework to measure individual cluster splashback radii and masses from SDSS data and constructs the first observational splashback mass function.
JWST nebular spectra detect cooling ~400 K carbonaceous dust emission in normal SN Ia 2023qov at +276 and +363 days, modeled as pre-existing circumstellar dust with mass ~10^{-4} M_sun located within ~1 light year.
Quantitative Bayesian inference using a deep-learning emulator detects 0.018-0.020 M_sun of helium in the Type Ic supernova 2014L.
First radio observations of SN 2023fyq detect a dense circumstellar shell with mass-loss rate ~0.004 solar masses per year ejected 0.7-3 years before explosion, consistent with a merger origin.
First use of the learned harmonic mean estimator for Bayesian model selection across circular/eccentric, white-noise/GP, and trend variants in radial velocity exoplanet analyses.
Asteroseismic structure inversions can be performed in acoustic and buoyancy coordinates, overcoming breakdowns for non-solar stars and removing the need for prior mass and radius knowledge in p-mode cases.
JWST observations revise Kamo`oalewa's spectrum to neutral colors like S/V/E-type asteroids with enstatite-rich composition, diameter 18 m, albedo ~0.59, and confirmed 27.9 min rotation.
First narrow-line flux ratios for lensed quasar RXJ1131-1231 measured with JWST/NIRSpec IFS at ~5% precision, detecting cusp anomaly consistent with prior work.
Time-resolved XRISM spectroscopy of NGC 4395 reveals variable inner-disk Fe Kα emission interpreted as Lense-Thirring precession, favoring low black hole mass (~9e3 solar masses) and moderate spin (a≳0.6).
Multi-epoch X-ray observations of SLSN-I 2018bsz support ejecta-CSM interaction as the dominant X-ray powering mechanism rather than a central magnetar.
Resolved multiphase observations reveal a supernova-driven wind in a z=5.3 galaxy removing gas at twice the star-formation rate, potentially quenching it within 100 Myr and matching local superwind properties.
Four parameters suffice to describe dust attenuation curve diversity in TNG simulations, yielding a new symbolic-regression model that recovers curves and fluxes better than existing parameterizations while linking parameters to SFR surface density, metallicity, and geometry.
JWST spectra of six z=5-9 galaxies show low-ionization covering fractions of 0.2-0.9 and diverse kinematics including blueshifted outflows, indicating heterogeneous multiphase ISM.
RUBIES JWST sample shows U increases with redshift and sSFR, decreases with mass, rising by a factor of ~4 from z=2 to z=6 at fixed mass and sSFR, with 0.3 dex systematic uncertainty from photoionization model range.
Blue straggler stars in old open clusters exhibit a Kraft break in rotation, with rapid rotators above the break and slow rotators below, indicating their envelopes behave like those of single stars.
The EDGES team publishes the first full public description of its 21-cm global-signal analysis pipeline, an open-source end-to-end software package, and the raw data from prior observations.
A 25-year Chandra catalog of 100 Sgr A* X-ray flares confirms that brighter flares are spectrally harder and strengthens prior correlations with duration and fluence.
A W-Net deep learning model detects asteroids in TESS data independently of trajectory by rotating training image cubes and using adaptive normalization for data scaling.
Spectroscopic members of the M92 stream yield a Milky Way bar pattern speed of 29.1 +0.7/-0.4 km s^{-1} kpc^{-1}.
ALMA Band 6 data detect SiO emission and masers up to v=8 in AGB stars, showing clumpy distributions, velocity gradients, and a tentative link between emission radius and mass-loss rate.
Detection of helium lines in Balmer-dominated shocks of Type Ia SNRs reveals enhanced helium in some remnants and challenges shock models, enabling new constraints on progenitor environments.
AGILE archival data reveal gamma-ray flares from a source matching IGR J17354-3255, with orbital phase correlation supporting physical association and high-energy emission from SFXTs.
citing papers explorer
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Discovery of a 24-millisecond pulsar in a very long orbit with the Murchison Widefield Array
Discovery of PSR J0125-5854, a 24 ms pulsar in a binary with orbital period ~834 days, low eccentricity, and likely helium white dwarf companion.
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JWST reveals how black holes are fed: kiloparsec-scale multiphase filaments feed sub-kiloparsec circumnuclear disks
JWST data show multiphase filaments feeding a circumnuclear disk that mediates accretion onto the black hole in NGC 4696, closing the AGN feedback loop.
-
The Splashback Mass Function of Galaxy Clusters from Photometric Data
Presents a fully photometric framework to measure individual cluster splashback radii and masses from SDSS data and constructs the first observational splashback mass function.
-
JWST Nebular Spectroscopy of SN 2023qov: Circumstellar Dust Emission in a Normal Type Ia Supernova
JWST nebular spectra detect cooling ~400 K carbonaceous dust emission in normal SN Ia 2023qov at +276 and +363 days, modeled as pre-existing circumstellar dust with mass ~10^{-4} M_sun located within ~1 light year.
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Traces of Helium Detected in Type Ic Supernova 2014L
Quantitative Bayesian inference using a deep-learning emulator detects 0.018-0.020 M_sun of helium in the Type Ic supernova 2014L.
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The first radio view of a type Ibn supernova in SN 2023fyq: Understanding the mass-loss history in the last decade before the explosion
First radio observations of SN 2023fyq detect a dense circumstellar shell with mass-loss rate ~0.004 solar masses per year ejected 0.7-3 years before explosion, consistent with a merger origin.
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Improving exoplanet mass characterisation with Bayesian model selection using the Learned Harmonic Mean Estimator
First use of the learned harmonic mean estimator for Bayesian model selection across circular/eccentric, white-noise/GP, and trend variants in radial velocity exoplanet analyses.
-
Can Asteroseismic Structure Inversions Be Performed in Structure-Dependent Coordinates?
Asteroseismic structure inversions can be performed in acoustic and buoyancy coordinates, overcoming breakdowns for non-solar stars and removing the need for prior mass and radius knowledge in p-mode cases.
-
JWST Characterization of Earth Quasi-Satellite (469219) Kamo`oalewa
JWST observations revise Kamo`oalewa's spectrum to neutral colors like S/V/E-type asteroids with enstatite-rich composition, diameter 18 m, albedo ~0.59, and confirmed 27.9 min rotation.
-
First measurement of narrow-line flux ratios for a lensed quasar with JWST/NIRSpec IFS
First narrow-line flux ratios for lensed quasar RXJ1131-1231 measured with JWST/NIRSpec IFS at ~5% precision, detecting cusp anomaly consistent with prior work.
-
XRISM Time-resolved Fe K$\alpha$ Spectroscopy of NGC 4395: Time-variable Inner-disk Emission
Time-resolved XRISM spectroscopy of NGC 4395 reveals variable inner-disk Fe Kα emission interpreted as Lense-Thirring precession, favoring low black hole mass (~9e3 solar masses) and moderate spin (a≳0.6).
-
Multi-Epoch X-Ray Detection of SLSN-I 2018bsz: Constraints on the Powering Mechanism and Ejecta Structure
Multi-epoch X-ray observations of SLSN-I 2018bsz support ejecta-CSM interaction as the dominant X-ray powering mechanism rather than a central magnetar.
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Multiphase images of a powerful supernova-driven wind in the early Universe
Resolved multiphase observations reveal a supernova-driven wind in a z=5.3 galaxy removing gas at twice the star-formation rate, potentially quenching it within 100 Myr and matching local superwind properties.
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Learning the Universe: The Structure of Dust Attenuation Curves in Galaxy Simulations
Four parameters suffice to describe dust attenuation curve diversity in TNG simulations, yielding a new symbolic-regression model that recovers curves and fluxes better than existing parameterizations while linking parameters to SFR surface density, metallicity, and geometry.
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JWST absorption line spectroscopy with SPURS: ISM covering fractions and kinematics in individual galaxies at $z=5-9$
JWST spectra of six z=5-9 galaxies show low-ionization covering fractions of 0.2-0.9 and diverse kinematics including blueshifted outflows, indicating heterogeneous multiphase ISM.
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RUBIES: The Evolution of the Ionization Parameter from 0 < z < 9
RUBIES JWST sample shows U increases with redshift and sSFR, decreases with mass, rising by a factor of ~4 from z=2 to z=6 at fixed mass and sSFR, with 0.3 dex systematic uncertainty from photoionization model range.
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Blue Straggler Stars in Old Open Clusters and the Kraft Break
Blue straggler stars in old open clusters exhibit a Kraft break in rotation, with rapid rotators above the break and slow rotators below, indicating their envelopes behave like those of single stars.
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The EDGES Analysis Pipeline: Description and Validation
The EDGES team publishes the first full public description of its 21-cm global-signal analysis pipeline, an open-source end-to-end software package, and the raw data from prior observations.
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The Demographics of Sagittarius A* X-ray Flares over 25 Years with Chandra
A 25-year Chandra catalog of 100 Sgr A* X-ray flares confirms that brighter flares are spectrally harder and strengthens prior correlations with duration and fluence.
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Trajectory-Agnostic Asteroid Detection in TESS with Deep Learning
A W-Net deep learning model detects asteroids in TESS data independently of trajectory by rotating training image cubes and using adaptive normalization for data scaling.
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Constraining the Galactic bar using the M92 stellar stream
Spectroscopic members of the M92 stream yield a Milky Way bar pattern speed of 29.1 +0.7/-0.4 km s^{-1} kpc^{-1}.
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ATOMIUM: Inner circumstellar envelopes of oxygen-rich AGB stars as revealed by highly excited SiO lines
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Helium emission from Balmer-dominated shocks in Type Ia supernova remnants provides constraints to their progenitor systems
Detection of helium lines in Balmer-dominated shocks of Type Ia SNRs reveals enhanced helium in some remnants and challenges shock models, enabling new constraints on progenitor environments.
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AGILE detection of transient {\gamma}-ray emission from the region of the supergiant fast X-ray transient source IGR J17354-3255
AGILE archival data reveal gamma-ray flares from a source matching IGR J17354-3255, with orbital phase correlation supporting physical association and high-energy emission from SFXTs.
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The Keplerian disk, envelope, and streamers surrounding an early O-type protostar in the Sagittarius C cloud of the Central Molecular Zone
A ~40 solar-mass protostar in Sgr C is surrounded by a Keplerian disk of centrifugal radius 1300 au, free-falling streamers, and an envelope accretion rate of 7e-3 solar masses per year.
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Resolving the Unresolved Galactic Winds in Multi-phase Models. I. Methodology and Application
A new fitting methodology applied to UV absorption data recovers radial trends in galactic wind velocities and mass-loading factors by constraining initial hot and cool phase parameters in a multiphase model.
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Archival Multiband Gravitational-Wave Signals from Massive Black Hole Binary Mergers
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A Census of Na D-traced neutral ISM and outflows at $0.6<z<4$
A JWST census detects neutral ISM absorption in 76 of 309 galaxies at 0.6<z<4 and outflows in 26, indicating AGN-driven neutral outflows dominate in quiescent systems at cosmic noon.
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Witnessing the onset of stellar winds in Super-Luminous Supernova Hosts: implications for star-formation-driven outflows in low and high-redshift galaxies
Spectroscopic observations of six low-mass, metal-poor SLSN host galaxies reveal slow stellar-wind-driven outflows with velocities 37-104 km/s and mass-loading factors below 1 in the earliest phases of star formation.
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Isolating Sgr A East: The First Uncontaminated X-ray Maps of a Galactic Center Supernova Remnant
pGMCA separation of Chandra data yields the first uncontaminated X-ray maps of Sgr A East, with spectral fits showing lower ionization age and higher electron density than prior reports.
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Tracing Active Galactic Nuclei Properties Through a Changing-look Event
A changing-look AGN exhibits a rapid accretion-driven spectral transition with broad-line region temperatures of approximately 11,800 K measured via Boltzmann plots and stable black hole mass estimates of 5 times 10 to the 7 solar masses across epochs.
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Multiple protostellar outflows from a single protostar with a misaligned disk
Misaligned protostellar cores produce a spiral flow outflow in addition to the disk wind, with the spiral flow becoming dominant and more massive at misalignment angles of 60 degrees or greater.
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Lensed stars in galaxy-galaxy strong lensing -- a JWST prediction for the Cosmic Horseshoe
Calculation predicts ~60 lensed star transients per JWST pointing in the Cosmic Horseshoe, enabling spatial tests of dark matter and constraints on the stellar IMF.
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JWST's first view of the most vigorously star-forming cloud in the Galactic center -- Sagittarius B2
New JWST multi-filter imaging of Sgr B2 detects previously hidden massive stars and ionized structures while finding no extended young stellar objects, implying star formation there has only recently begun.
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The heart of NGC 5253 as seen with MUSE-NFM: nitrogen enrichment through stellar chemical feedback at parsec scales
High-resolution mapping reveals nitrogen enrichment around super star clusters in NGC 5253, attributed to Wolf-Rayet stars with material expelled to surrounding gas.
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Hitting the slopes: A spectroscopic view of UV continuum slopes of galaxies reveals a reddening at z > 9.5
JWST spectroscopy of 295 galaxies at 5.5 < z < 14.3 shows UV slope beta reddening at z > 9.5, with lack of dust as the main driver of bluer values and nebular continuum at T > 15,000 K able to reproduce the observed range without dust.
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GW190814: Gravitational Waves from the Coalescence of a 23 M$_\odot$ Black Hole with a 2.6 M$_\odot$ Compact Object
Detection of GW190814 from the coalescence of a 23 solar-mass black hole and a 2.6 solar-mass compact object, the most unequal-mass binary yet observed with gravitational waves.
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MUSE Imaging Spectroscopy of the Fullerene Planetary Nebula Tc 1
MUSE observations of Tc 1 map structured extinction, Te, and Ne, revealing a low-extinction annulus outside the main fullerene zone that is interpreted as evidence for locally altered dust properties in the core-halo transition.
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Changes in Pluto's Atmosphere Based on Stellar Occultation Data from 2017 to 2023
New stellar occultation data from 2017-2023 indicates Pluto's atmospheric pressure plateaued from 2015 to 2021 and has started to drop, with lower-atmosphere slope changes consistent with haze settling.
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EMU discovery of Thunder: a bow-shock PWN powered by PSR J1631-4722 escaping Nimbus SNR (G336.7+0.5)
Discovery of Thunder, a bow-shock PWN powered by PSR J1631-4722 in SNR G336.7+0.5 (Nimbus), characterized with radio, X-ray, and polarization data at assumed 7 kpc distance with age ~30-45 kyr.
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The Chandra-Gaia Catalog of Counterparts: Resolving ambiguous Gaia matches to X-ray sources in the Chandra Source Catalog using Machine Learning
A LightGBM classifier trained on NWAY Bayesian matches identifies true Chandra-Gaia counterparts for 113k X-ray sources, flags 7k ambiguous cases, and attributes half of 20k separation-only matches to chance coincidences, validated at 95% on COUP without positional features.
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The Contribution of Disrupted Dense Star Clusters to Gaia's Compact Object Binaries
Disrupted dense star clusters release ~300,000 white dwarf, 150,000 black hole, and 1,000 neutron star binaries into the Milky Way, but Gaia DR3/DR4 detect only a handful of white dwarf systems with none for the others.
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Tracing the very early disruption of the Sagittarius dwarf galaxy in the distant Milky Way halo
Spectroscopic measurements confirm a tight 6D phase-space clump of four RGB stars as part of the distant southern spur of the Sagittarius stream, likely stripped from Sagittarius's halo in the earliest interaction phases.
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Bar-induced migration of $\omega$ Centauri away from Gaia Sausage-Enceladus
Bar-induced migration can move ω Cen from the GSE phase-space region, but requires Ω_b ≲ 26 km s^{-1} kpc^{-1}, challenging consensus on the bar speed.
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A universal model for the accretion rates and formation times of dark matter halos
A six-parameter function of peak height ν, power spectrum slope n_eff, and growth rate α_eff accurately describes median halo mass accretion rates from simulations in ΛCDM and Einstein-de Sitter cosmologies at z=0-14.
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The colour variability of low-z SNe Ia is entirely explained by dust
Bayesian hierarchical modeling of ZTF DR2 and Foundation DR1 datasets shows dust explains all low-z SN Ia color variability after correcting for color-cut selection bias, with no residual intrinsic color term needed.
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An extremely bright slow-rising afterglow from an off-axis jet in GRB 260310A
Multi-wavelength data on GRB 260310A support an off-axis jet model explaining weak prompt emission and bright delayed afterglow, including reverse-shock signatures and late X-ray rebrightening.
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Exoplanets in ancient stellar populations: occurrence constraints and hot-Jupiter candidates in the Galactic halo
Hot Jupiter occurrence in the Galactic halo is low at ~0.13% with no significant difference between in-situ and accreted populations, well below disk rates.
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X-Ray Polarization from the Gamma-Ray Binary LS I +61 303
X-ray polarization of 13.1% ± 3.0% is detected from LS I +61 303 at 4.2 sigma, with EVPA alignment to the binary axis depending on which set of orbital elements is adopted.
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Probing the IMF in the Early Universe -- Direct measurements in the Bo\"otes I UFD with JWST/NIRCam
The low-mass IMF in Boötes I is consistent with the Milky Way within 68% confidence for broken power-law and lognormal forms, indicating universality at low metallicity.