Constraining the topological Gauss-Bonnet coupling from GW150914

Source
Physical Review D
ISSN
24700010
Date Issued
2022-08-15
Author(s)
Chakravarti, Kabir
Ghosh, Rajes
DOI
Volume
106
Issue
4
Abstract
Recent gravitational wave observation based on the data from GW150914 has confirmed Hawking's area theorem and estimated the increase in total horizon area during a merger process of two Kerr black holes. We use this result and the validity of the second law to obtain the first observational bound on the 4D topological Gauss-Bonnet coupling as γ≲2.804-1.169+7.946×109m2 with 95% credibility.
Publication link
https://arxiv.org/pdf/2201.08700
URI