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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representative citing papers
Time-resolved spectroscopy reveals broad and narrow LPVs in O VI from WD J005311, linked to line-driven wind instabilities and an unstable RRM disk, plus a pseudo-periodic UV oscillation.
New G-band relation [Fe/H] = -6.93 - 6.04P + 1.65 φ31 calibrated on 72 RR Lyrae stars with spectroscopic anchors, yielding 0.00 dex bias and 0.26 dex RMS scatter.
X-ray spectral modeling and timing analysis of V1674 Her constrain its white dwarf mass to 1.09-1.12 solar masses, well below the near-Chandrasekhar value expected from its t2~1 day decline time.
Detection of a persistent ~433-day optical QPO in blazar 3C 454.3 at 2.53σ significance using Lomb-Scargle, WWZ, and PDM methods, with a new test for seasonal gaps.
StarCLR pretrains on TESS light curves via contrastive learning on overlapping subsequences and improves variable star classification F1 scores over scratch-trained models when fine-tuned on TESS, ZTF, and Gaia.
Nested sampling applied to ARIMA models enables Bayesian order selection and parameter inference that recovers ground truth in simulations and fits stochastic variability in sunspot, Kepler, and TESS light curves.
A 1-norm robust periodogram is introduced for non-Gaussian irregular time series and applied to 259 quasars, identifying 49 with quasi-periodic signals above 3σ.
New NuSTAR observation and historical review indicate an initial strong shock near the red giant in RS Oph produces both gamma-ray particle acceleration and 0.2-30 keV thermal X-rays, with gamma-ray flux from Fermi inconsistent and implications for T CrB.
Fermi LAT data analysis detects a time-evolving ~162-day periodic GeV signal from 4FGL J1913.2+0512 linked to SS 433, prominent in 2008-2018 but diminished afterward, indicating multi-year evolution in gamma-ray production efficiency or geometry.
Rotationally modulated radio pulses with near-100% circular polarization from M dwarf ASKAP J181335-604720 are interpreted as coherent electron cyclotron maser emission from its magnetosphere based on simultaneous radio-optical observations.
TOI-4311 hosts a 0.99-day super-Earth (1.38 R_earth, 4.5 M_earth) and 15-day sub-Neptune (2.47 R_earth), plus a candidate 38-day planet, with the dense inner planet potentially challenging formation theories given the host's galactic population.
Deep learning infers Δν and ν_max from one-month TESS and K2 observations of red giants with reliable results for ~50% of Kepler/K2 samples and ~23% of TESS stars, plus ΔΠ1 for ~200 K2 young red giants that match known patterns.
EP J174942.2-384834 is classified as a very faint X-ray transient black hole candidate based on its hard X-ray spectra, optical/UV brightening correlated with X-rays, and lack of radio emission.
The asteroid 2022 OB5 rotates every 1.542 minutes, making surface operations impractical despite its favorable orbit.
2CXO J0507 is a polar-type magnetic cataclysmic variable featuring a white dwarf with B ≈ 30 MG and an orbital period of 2.34 hours, identified through multiwavelength archival and follow-up data.
A search of repeating FRBs identifies RM flare candidates in FRB 20121102A, FRB 20201124A, and FRB 20180916B, suggesting such events may be common and tied to dynamic magneto-ionic environments.
Young M dwarf flares exert greater chemical stress on primordial exo-Earth atmospheres than previous models, with potential for lasting changes in mixing ratios especially for low-abundance species.
TOI-1710 b has a true obliquity of 149 degrees indicating retrograde motion, favoring high-eccentricity migration via planet-planet scattering and Kozai-Lidov cycles for this tidally detached super-Neptune.
ASTRAFier is a Transformer-BiLSTM-CNN model that classifies stellar variability from light curves, reporting 94.26% accuracy on Kepler data and 88.22% on TESS, then applied to 2.8 million TESS curves to release a catalog.
Long-term spectroscopy of GJ 436 shows activity modulated by the planet's orbit, yielding a 6-110 G estimate for the warm Neptune's magnetic field via a new geometrical model.
The TESS All-Sky Rotation Survey provides periods for 1,046,317 stars within 500 pc, with an estimated 93% being true rotation periods, and includes a method to correct half-period aliases.
Discovery of KSP-OT-202104a, a new WZ Sge-type dwarf nova with P_sh ≈ 71.7 min likely below the period minimum and evolving toward AM CVn.
Linear stability analysis and non-linear hydrodynamical simulations link the stochastic low-frequency variability of ε Ori to strange-mode instabilities that excite finite-amplitude pulsations.
citing papers explorer
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Photometric metallicity of Galactic RR Lyrae stars in the Gaia DR3 era
New G-band relation [Fe/H] = -6.93 - 6.04P + 1.65 φ31 calibrated on 72 RR Lyrae stars with spectroscopic anchors, yielding 0.00 dex bias and 0.26 dex RMS scatter.
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X-ray spectroscopy mass constraints on V1674 Her: the fastest nova does not have a near-Chandrasekhar white dwarf
X-ray spectral modeling and timing analysis of V1674 Her constrain its white dwarf mass to 1.09-1.12 solar masses, well below the near-Chandrasekhar value expected from its t2~1 day decline time.
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Detection of optical quasi-periodic oscillation in the blazar 3C 454.3
Detection of a persistent ~433-day optical QPO in blazar 3C 454.3 at 2.53σ significance using Lomb-Scargle, WWZ, and PDM methods, with a new test for seasonal gaps.
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StarCLR: Contrastive Learning Representation for Astronomical Light Curves
StarCLR pretrains on TESS light curves via contrastive learning on overlapping subsequences and improves variable star classification F1 scores over scratch-trained models when fine-tuned on TESS, ZTF, and Gaia.
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Inferring Asteroseismic Parameters from Short Observations Using Deep Learning: Application to TESS and K2 Red Giants
Deep learning infers Δν and ν_max from one-month TESS and K2 observations of red giants with reliable results for ~50% of Kepler/K2 samples and ~23% of TESS stars, plus ΔΠ1 for ~200 K2 young red giants that match known patterns.
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Multiwavelength Characterization of a New Magnetic Cataclysmic Variable 2CXO J050740.7-091337
2CXO J0507 is a polar-type magnetic cataclysmic variable featuring a white dwarf with B ≈ 30 MG and an orbital period of 2.34 hours, identified through multiwavelength archival and follow-up data.
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Planet-induced Periodic Modulation of Stellar Activity in GJ~436: Insights into a Warm Neptune's Magnetic Field
Long-term spectroscopy of GJ 436 shows activity modulated by the planet's orbit, yielding a 6-110 G estimate for the warm Neptune's magnetic field via a new geometrical model.
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A New WZ Sagittae-type Dwarf Nova KSP-OT-202104a Near the Period Minimum from the KMTNet Supernova Program
Discovery of KSP-OT-202104a, a new WZ Sge-type dwarf nova with P_sh ≈ 71.7 min likely below the period minimum and evolving toward AM CVn.
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A Search for Variability of Ultracool Dwarfs with the Zwicky Transient Facility
ZTF data yielded 32 robust ultracool dwarf rotation periods including 12 new detections, with a trend of decreasing periods toward later spectral types in dwarfs older than 100 Myr.
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The NANOGrav 15 yr and 20 yr Datasets: Timing Events and Pulse Shape Changes
PCA analysis of NANOGrav data recovers known pulse shape changes tied to timing events in pulsars like J1713+0747 and identifies new candidates and a recurrence in PSR B1937+21.
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HWO Target Stars and Systems: Activity and Rotation Catalog (ARC) of Potential Target Stars for the Habitable Worlds Observatory
Collates archival stellar activity and rotation data for potential HWO targets, finding measurements for at least 70% of high-interest systems but activity cycles for fewer than 20%.