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505 papers · 1 filter
Multiwavelength Characterization of a New Magnetic Cataclysmic Variable 2CXO J050740.7-091337
Ilkham Galiullin, Vladislav Dodon, Antonio C. Rodriguez +2
We report the discovery and characterization of a new cataclysmic variable (CV), 2CXO J050740.7-091337 (hereafter 2CXO J0507), identified using the X-ray main sequence through a cr…
TDE 2025abcr: A Tidal Disruption Event in the Outskirts of a Massive Galaxy
Robert Stein, Jonathan Carney, Charlotte Ward +27
Tidal disruption events (TDEs) have traditionally been discovered in optical sky surveys through targeted searches of nuclear transients. However, it is expected that some TDEs wil…
AT2024wpp: An Extremely Luminous Fast Ultraviolet Transient Powered by Accretion onto a Black Hole
Daniel A. Perley, Anna Y. Q. Ho, Zoë McGrath +69
We present the discovery of AT 2024wpp ("Whippet"), a fast and luminous 18cow-like transient. At a redshift of z=0.0868, revealed by Keck Cosmic Web Imager spectroscopy of its fain…
Optical Counterparts to X-ray sources in LSST DP1
Yuankun, Wang, Eric C. Bellm +9
We present a crossmatch between a combined catalog of X-ray sources and the Vera C. Rubin Observatory Data Preview 1 (DP1) to identify optical counterparts. The six fields targeted…
A Continuous Galactic Line Source of Axions: The Remarkable Case of 23Na
W. C. Haxton, Xing Liu, Annie McCutcheon +1
We argue that Na is a potentially significant source of galactic axions. For temperatures K -- characteristic of carbon burning in the massive progeni…
Suppression of composition -modes in chemically-equilibrating warm neutron stars
Tianqi Zhao, Peter B. Rau, Alexander Haber +3
We investigate the impact of chemical equilibration and the resulting bulk viscosity on non-radial oscillation modes of warm neutron stars at temperatures up to MeV, r…