5 papers
Measurability of Quadrupole Deviations from Kerr in Binary black hole Mergers
Song Li, Wen-Biao Han
We investigate the measurability of black hole quadrupole deviations from Kerr using five binary black hole mergers observed by the LIGO-Virgo-KAGRA Collaboration with the beyond-g…
Inferring the cosmological constant in early Universe only by gravitational waves
Song Li, Wen-Biao Han
The expansion of the Universe is accelerating which can be interpreted as due to the cosmological constant . In this study, we investigate the behavior of gravitational waves in…
Indication for a compact object next to a LIGO-Virgo binary black hole merger
Shu-Cheng Yang, Wen-Biao Han, Hiromichi Tagawa +2
The astrophysical origin of binary black hole (BBH) mergers remains uncertain, although many events have been observed by the LIGO-Virgo-KAGRA network. Such mergers are potentially…
Tests of no-hair theorem with binary black-hole coalescences
Song Li, Wen-Biao Han, Shu-Cheng Yang
Test of the no-hair theorem is the primary target with gravitational waves from binary black holes. In this Letter, we analyze gravitational-wave data from the LIGO-Virgo-KAGRA det…
Dynamics of null particles and shadow for general rotating black hole
Kun Meng, Xi-Long Fan, Song Li +2
The Johannsen black hole (BH) is a generic rotating BH admitting three constants of motions (energy, angular momentum, and Carter constant) and is characterized by four deviation p…