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

Shilpa Kastha, Anuradha Gupta, K. G. Arun, B. S. Sathyaprakash, and Chris Van Den Broeck
Phys. Rev. D 100, 044007 – Published 6 August 2019
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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.

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  • Received 17 May 2019

DOI:https://doi.org/10.1103/PhysRevD.100.044007

© 2019 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Gravitation, Cosmology & Astrophysics

Authors & Affiliations

Shilpa Kastha1,2,*, Anuradha Gupta3,†, K. G. Arun4,3,‡, B. S. Sathyaprakash3,5,6,§, and Chris Van Den Broeck7,8,∥

  • 1The Institute of Mathematical Sciences, C. I. T. Campus, Taramani, Chennai, 600113, India
  • 2Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India
  • 3Institute for Gravitation and the Cosmos, Department of Physics, Penn State University, University Park, Pennsylvania 16802, USA
  • 4Chennai Mathematical Institute, Siruseri, 603103, India
  • 5Department of Astronomy and Astrophysics, Penn State University, University Park, Pennsylvania 16802, USA
  • 6School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA, United Kingdom
  • 7Nikhef - National Institute for Subatomic Physics, Science Park 105, 1098 XG Amsterdam, Netherlands
  • 8Van Swinderen Institute for Particle Physics and Gravity, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands

  • *shilpakastha@imsc.res.in
  • axg645@psu.edu
  • kgarun@cmi.ac.in
  • §bss25@psu.edu
  • vdbroeck@nikhef.nl

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Issue

Vol. 100, Iss. 4 — 15 August 2019

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