Testing the multipole structure and conservative dynamics of compact binaries using gravitational wave observations: The spinning case

Kastha, Shilpa, Gupta, Anuradha, Arun, K.G., Sathyaprakash, B.S. ORCID: https://orcid.org/0000-0003-3845-7586 and Van Den Broeck, Chris 2019. Testing the multipole structure and conservative dynamics of compact binaries using gravitational wave observations: The spinning case. Physical Review D 100 (4) , 044007. 10.1103/PhysRevD.100.044007

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Abstract

In an earlier work [S. Kastha et al., Phys. Rev. D 98, 124033 (2018)], we developed the parametrized multipolar gravitational wave phasing formula to test general relativity, for the nonspinning compact binaries in quasicircular orbit. In this paper, we extend the method and include the important effect of spins in the inspiral dynamics. Furthermore, we consider parametric scaling of post-Newtonian (PN) coefficients of the conserved energy for the compact binary, resulting in the parametrized phasing formula for nonprecessing spinning compact binaries in quasicircular orbit. We also compute the projected accuracies with which the second and third generation ground-based gravitational wave detector networks as well as the planned space-based detector LISA will be able to measure the multipole deformation parameters and the binding energy parameters. Based on different source configurations, we find that a network of third-generation detectors would have comparable ability to that of LISA in constraining the conservative and dissipative dynamics of the compact binary systems. This parametrized multipolar waveform would be extremely useful not only in deriving the first upper limits on any deviations of the multipole and the binding energy coefficients from general relativity using the gravitational wave detections, but also for science case studies of next generation gravitational wave detectors.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Physics and Astronomy
Publisher:	American Physical Society
ISSN:	2470-0010
Date of First Compliant Deposit:	30 September 2019
Date of Acceptance:	6 August 2019
Last Modified:	03 May 2023 16:52
URI:	https://orca.cardiff.ac.uk/id/eprint/125726

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