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Multiparameter tests of general relativity using multiband gravitational-wave observations

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arxiv 2005.09607 v3 pith:KAB2LDWC submitted 2020-05-19 gr-qc

Anuradha Gupta , Sayantani Datta , Shilpa Kastha , Ssohrab Borhanian , K. G. Arun , B. S. Sathyaprakash This is my paper · ORCID
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keywords generalmultibandobservationsrelativityboundscoefficientslisamultiparameter
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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 (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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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Multiband parameter estimation with phase coherence and extrinsic marginalization: Extracting more information from low-SNR CBC signals in LISA data

    gr-qc 2025-06 conditional novelty 8.0 of 10

    A coherent multiband Bayesian parameter estimation method with extrinsic-parameter marginalization extracts useful information from LISA observations of stellar-mass binary black holes down to LISA SNR 3, nearly doubl...

  2. A parametrized test of general relativity for inspiralling eccentric binaries in LISA

    gr-qc 2026-08 conditional novelty 6.0 of 10

    For eccentric black-hole binaries observed by LISA, a parametrized deformation of the periastron-precession rate could be constrained to |δα|≲10^-4 at 90% credibility with the full-model template.

  3. Inspiral tests of general relativity and waveform geometry

    gr-qc 2026-02 conditional novelty 5.0 of 10

    The power of ppE-style GR tests comes from waveform geometry: GR parameter biases absorb most of any smooth phase deviation, and SVD finds the few orthogonal directions that remain.

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