241 citations · 2.6k across the 97 of their papers we have counts for
12 papers · 1 filter
Stellar rotation as a new observable to test general relativity in the Galactic Center
Yun Fang, Xian Chen
S-stars in the Galactic Center are excellent testbeds of various general relativistic effects. While previous works focus on modeling their orbital motion around Sgr A*--the superm…
Degeneracy between mass and peculiar acceleration for the double white dwarfs in the LISA band
Zeyuan Xuan, Peng Peng, Xian Chen
Mass and distance are fundamental quantities to measure in gravitational-wave (GW) astronomy. However, recent studies suggest that the measurement may be biased due to the accelera…
Excitation of gravitational wave modes by a center-of-mass velocity of the source
Alejandro Torres-Orjuela, Xian Chen, Pau Amaro Seoane
Most gravitational wave (GW) sources are moving relative to us. This motion is often closely related to the environment of the source and can thus provide crucial information about…
Exciting modes due to the aberration of gravitational waves: Measurability for extreme-mass-ratio inspirals
Alejandro Torres-Orjuela, Pau Amaro Seoane, Zeyuan Xuan +3
Gravitational waves from a source moving relative to us can suffer from special-relativistic effects such as aberration. The required velocities for these to be significant are on…
Distortion of Gravitational-wave Signals by Astrophysical Environments
Xian Chen
Many objects discovered by LIGO and Virgo are peculiar because they fall in a mass range which in the past was considered unpopulated by compact object. Given the significance of t…
Merging stellar and intermediate-mass black holes in dense clusters: implications for LIGO, LISA and the next generation of gravitational wave detectors
Manuel Arca-Sedda, Pau Amaro-Seoane, Xian Chen
We study the formation of intermediate-mass ratio inspirals (IMRIs) triggered by the interactions between two stellar black holes (BHs) and an intermediate-mass BH (IMBH) inhabitin…
Very extreme mass-ratio bursts in the Galaxy and neighbouring galaxies in relation to space-borne detectors
Wen-Biao Han, Xing-Yu Zhong, Xian Chen +1
Two recent papers\citep{xmri1, xmri2} revealed that in our Galaxy there are very extreme-mass-ratio inspirals composed by brown dwarfs and the supermassive black hole at the center…
A Shining Death of Unequal Supermassive Black Hole Binaries
Xian Chen, D. N. C. Lin, Xiaojia Zhang
In the CDM scenario, small galaxies merge to produce larger entities. Since supermassive black holes (SMBHs) are found in galaxies of all sizes, SMBH binaries (SMBHBs) are gener…
Fake massive black holes in the milli-Hertz gravitational-wave band
Xian Chen, Ze-Yuan Xuan, Peng Peng
In gravitational wave (GW) astronomy accurate measurement of the source parameters, such as mass, relies on accurate waveform templates. Currently, the templates are developed assu…
Impact of an Active Sgr A* on the Synthesis of Water and Organic Molecules Throughout the Milky Way
Chang Liu, Xian Chen, Fujun Du
Sgr A*, the supermassive black hole (SMBH) in our Galaxy, is dormant today, but it should have gone through multiple gas-accretion episodes in the past billions of years to grow to…
Measuring black hole masses from tidal disruption events and testing the relation
Z. Q. Zhou, F. K. Liu, S. Komossa +4
Liu and collaborators recently proposed an elliptical accretion disk model for tidal disruption events (TDEs). They showed that the accretion disks of optical/UV TDEs are large and…
Phase shift of gravitational waves induced by aberration
Alejandro Torres-Orjuela, Xian Chen, Pau Amaro-Seoane
The velocity of a gravitational wave (GW) source provides crucial information about its formation and evolution processes. Previous studies considered the Doppler effect on the pha…