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Multiparameter tests of general relativity using multiband gravitational-wave observations

Gupta, Anuradha, Datta, Sayantani, Kastha, Shilpa, Borhanian, Ssohrab, Arun, K. G. and Sathyaprakash, B. S. ORCID: 2020. Multiparameter tests of general relativity using multiband gravitational-wave observations. Physical Review Letters 125 (20) , 201101. 10.1103/PhysRevLett.125.201101

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In this Letter, we show that multiband observations of stellar-mass binary black holes by the next generation of ground-based observatories (3G) and the space-based Laser Interferometer Space Antenna ( L I S A ) would facilitate a comprehensive test of general relativity by simultaneously measuring all the post-Newtonian coefficients. Multiband observations would measure most of the known post-Newtonian phasing coefficients to an accuracy below a few percent—2 orders-of-magnitude better than the best bounds achievable from even “golden” binaries in the 3G or L I S A bands. Such multiparameter bounds would play a pivotal role in constraining the parameter space of modified theories of gravity beyond general relativity.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: American Physical Society
ISSN: 0031-9007
Date of First Compliant Deposit: 27 November 2020
Date of Acceptance: 9 October 2020
Last Modified: 05 May 2023 01:49

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