Work

Retesting the no-hair theorem with GW150914

Year: 2022

Type: article

Abstract: For a distorted black hole (BH), its ringdown waveform is a superposition of quasi-normal modes (QNMs). In general relativity (GR), the lower order QNM frequencies and damping rates can be well approximated by a polynomial of BH’s dimensionless spin and overall scaled by BH’s mass. That is to say, we can test the no-hair theorem of BH in GR model-independently by allowing not only an overall fractional deviation (as M. Isi et al. did) but also a set of fractional deviation for every coefficient. In the paper, we will apply the latter method to retest the no-hair theorem with GW150914 and probe hairs’ behaviors if hairs exist. Eventually, we find the data favors GR.

Source: The European Physical Journal C

DOI: 10.1140/epjc/s10052-022-10049-x

Author: Ke Wang

Institution: Lanzhou University

Language: English

Topic: Pulsars and Gravitational Waves Research

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, National Supercomputing Center, Korea Institute of Science and Technology Information

Awards: G1334502267, G5241401642, G6071416816