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Surrogate model for gravitational wave signals from nonspinning, comparable-to large-mass-ratio black hole binaries built on black hole perturbation theory waveforms calibrated to numerical relativity

Tousif Islam, Scott E. Field, Scott A. Hughes, Gaurav Khanna, Vijay Varma, Matthew Giesler, Mark A. Scheel, Lawrence E. Kidder, and Harald P. Pfeiffer
Phys. Rev. D 106, 104025 – Published 14 November 2022

Abstract

We present a reduced-order surrogate model of gravitational waveforms from nonspinning binary black hole systems with comparable to large mass-ratio configurations. This surrogate model, BHPTNRSur1dq1e4, is trained on waveform data generated by point-particle black hole perturbation theory (ppBHPT) with mass ratios varying from 2.5 to 10,000. BHPTNRSur1dq1e4 extends an earlier waveform model, EMRISur1dq1e4, by using an updated transition-to-plunge model, covering longer durations up to 30,500m1 (where m1 is the mass of the primary black hole), includes several more spherical harmonic modes up to =10, and calibrates subdominant modes to numerical relativity (NR) data. In the comparable mass-ratio regime, including mass ratios as low as 2.5, the gravitational waveforms generated through ppBHPT agree surprisingly well with those from NR after this simple calibration step. We also compare our model to recent SXS and RIT NR simulations at mass ratios ranging from 15 to 32, and find the dominant quadrupolar modes agree to better than 103. We expect our model to be useful to study intermediate-mass-ratio binary systems in current and future gravitational-wave detectors.

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  • Received 10 April 2022
  • Accepted 10 October 2022

DOI:https://doi.org/10.1103/PhysRevD.106.104025

© 2022 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Gravitation, Cosmology & Astrophysics

Authors & Affiliations

Tousif Islam1,2,3,4,*, Scott E. Field2,3, Scott A. Hughes5, Gaurav Khanna6,1,3, Vijay Varma7, Matthew Giesler8, Mark A. Scheel9, Lawrence E. Kidder8, and Harald P. Pfeiffer7

  • 1Department of Physics, University of Massachusetts, Dartmouth, Massachusetts 02747, USA
  • 2Department of Mathematics, University of Massachusetts, Dartmouth, Massachusetts 02747, USA
  • 3Center for Scientific Computing and Visualization Research, University of Massachusetts, Dartmouth, Massachusetts 02747, USA
  • 4Kavli Institute of Theoretical Physics, University of California Santa Barbara, Santa Barbara, California 93106, USA
  • 5Department of Physics and MIT Kavli Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
  • 6Department of Physics, University of Rhode Island, Kingston, Rhode Island 02881, USA
  • 7Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Am Mühlenberg 1, Potsdam 14476, Germany
  • 8Cornell Center for Astrophysics and Planetary Science, Cornell University, Ithaca, New York 14853, USA
  • 9Theoretical Astrophysics, Walter Burke Institute for Theoretical Physics, California Institute of Technology, Pasadena, California 91125, USA

  • *tislam@umassd.edu

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Issue

Vol. 106, Iss. 10 — 15 November 2022

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