3 papers
gr-qc2026
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…
astro-ph.HE2025
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…
gr-qc2025
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 i…