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  Multiparameter tests of general relativity using multiband gravitational-wave observations

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

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 Creators:
Gupta, Anuradha, Author
Datta, Sayantani, Author
Kastha, Shilpa1, Author              
Borhanian, Ssohrab, Author
Arun, K. G., Author
Sathyaprakash, B. S., Author
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: 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 (LISA) would facilitate a comprehensive test of general relativity by simultaneously measuring all the post-Newtonian (PN) coefficients. Multiband observations would measure most of the known PN phasing coefficients to an accuracy below a few percent---two orders-of-magnitude better than the best bounds achievable from even `golden' binaries in the 3G or LISA bands. Such multiparameter bounds would play a pivotal role in constraining the parameter space of modified theories of gravity beyond general relativity.

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 Dates: 2020-05-192020-11-10
 Publication Status: Published in print
 Pages: 7 pages, 4 figures
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Title: Physical Review Letters
Source Genre: Journal
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Pages: - Volume / Issue: 125 (20) Sequence Number: 201101 Start / End Page: - Identifier: -