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gr-qc2026
Tests of general relativity at the fourth post-Newtonian order with GW230627 and GW250114
Xi-Min Liang, Yuan-Zhu Wang, Tao Zhu +2
Gravitational wave (GW) observations provide an unprecedented laboratory for testing general relativity (GR) in the strong-field, highly dynamic, and relativistic regimes. Within t…
gr-qc2026
Bounding the number of spacetime dimensions from precessing black hole binaries with the third-generation gravitational-wave detectors
Xu-Jie Zhu, Ji-Yu Song, Tao Zhu +1
In the theories with extra dimensions, gravitational waves can leak into extra dimensions, resulting in a reduction in the amplitude of the observed gravitational waves. Such an ef…
gr-qc2025
Two-Dimensional Pulsar Distance Inference from Nanohertz Gravitational Waves
Si-Ren Xiao, Ji-Yu Song, Yue Shao +3
Pulsar timing arrays (PTAs) are limited in localizing nanohertz continuous gravitational waves (CGWs) by uncertainties in pulsar distances. We introduce a method to infer pulsar di…