241 citations · 2.6k across the 97 of their papers we have counts for
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The Gamma-ray Afterglows of Tidal Disruption Events
Xian Chen, Germán Gómez-Vargas, James Guillochon
A star wandering too close to a supermassive black hole (SMBH) will be tidally disrupted. Previous studies of such "tidal disruption event" (TDE) mostly focus on the stellar debris…
SDSS J0159+0105: A Radio-Quiet Quasar with a Centi-Parsec Supermassive Black Hole Binary Candidate
Zhen-Ya Zheng, Nathaniel R. Butler, Yue Shen +4
We report a candidate centi-parsec supermassive black hole binary (SMBHB) in the radio-quiet quasar SDSS J0159+0105 at z=0.217. With a modified lomb-scargle code GLSdeDRW and the a…
Relativistic mergers of black hole binaries have large, similar masses, low spins and are circular
Pau Amaro-Seoane, Xian Chen
Gravitational waves are a prediction of general relativity, and with ground-based detectors now running in their advanced configuration, we will soon be able to measure them direct…
Unbound Debris Streams and Remnants Resulting From the Tidal Disruptions of Stars by Supermassive Black Holes
James Guillochon, Michael McCourt, Xian Chen +2
The kinetic energy of a star in orbit about a supermassive black hole is a significant fraction of its rest mass energy when its periapse is comparable to its tidal radius. Upon it…
Stability of Gas Clouds in Galactic Nuclei: An Extended Virial Theorem
Xian Chen, Pau Amaro-Seoane, Jorge Cuadra
Cold gas entering the central to pc of a galaxy fragments and condenses into clouds. The stability of the clouds determines whether they will be turned into stars or can…