Tight constraints on Einstein-dilation-Gauss-Bonnet gravity from GW190412 and GW190814

Gravitational-wave (GW) data can be used to test general relativity in the highly nonlinear and strong field regime. Modified gravity theories such as Einstein-dilation-Gauss-Bonnet and dynamical Chern-Simons can be tested with the additional GW signals detected in the first half of the third observ...

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Bibliographic Details
Published in:Physical review. D 2021-07, Vol.104 (2), p.1, Article 024015
Main Authors: Wang, Hai-Tian, Tang, Shao-Peng, Li, Peng-Cheng, Han, Ming-Zhe, Fan, Yi-Zhong
Format: Article
Language:English
Subjects:
Black holes
Dilation
Gravitational waves
Relativity
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Summary:Gravitational-wave (GW) data can be used to test general relativity in the highly nonlinear and strong field regime. Modified gravity theories such as Einstein-dilation-Gauss-Bonnet and dynamical Chern-Simons can be tested with the additional GW signals detected in the first half of the third observing run of Advanced LIGO/Virgo. Specifically, we analyze gravitational-wave data of GW190412 and GW190814 to place constraints on the parameters of these two theories. Our results indicate that dynamical Chern-Simons gravity remains unconstrained. For Einstein-dilation-Gauss-Bonnet gravity, we find √ αEdGB≲ 0.40     km when considering GW190814 data, assuming it is a black hole binary. Such a constraint are improved by a factor of approximately 10 in comparison to that set by the first Gravitational-Wave Transient Catalog events.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.104.024015