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Surrogate models for precessing binary black hole simulations with unequal masses

Varma, V., Field, S. E., Scheel, M. A., Blackman, J., Gerosa, D., Stein, L. C., et al. (2019). Surrogate models for precessing binary black hole simulations with unequal masses. Physical Review Research, 1: 033015. doi:10.1103/PhysRevResearch.1.033015.

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Genre: Journal Article

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1905.09300.pdf (Preprint), 2MB
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### Creators

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Creators:
Varma, Vijay, Author
Field, Scott E., Author
Scheel, Mark A., Author
Blackman, Jonathan, Author
Gerosa, Davide, Author
Stein, Leo C., Author
Kidder, Lawrence E., Author
Pfeiffer, Harald1, Author
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290

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Free keywords: General Relativity and Quantum Cosmology, gr-qc, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
Abstract: Only numerical relativity simulations can capture the full complexities of binary black hole mergers. These simulations, however, are prohibitively expensive for direct data analysis applications such as parameter estimation. We present two new fast and accurate surrogate models for the outputs of these simulations: the first model, NRSur7dq4, predicts the gravitational waveform and the second model, surfinBH7dq4, predicts the properties of the remnant black hole. These models extend previous 7-dimensional, non-eccentric precessing models to higher mass ratios, and have been trained against 1528 simulations with mass ratios $q\leq4$ and spin magnitudes $\chi_1,\chi_2 \leq 0.8$, with generic spin directions. The waveform model, NRSur7dq4, which begins about 20 orbits before merger, includes all $\ell \leq 4$ spin-weighted spherical harmonic modes, as well as the precession frame dynamics and spin evolution of the black holes. The final black hole model, surfinBH7dq4, models the mass, spin, and recoil kick velocity of the remnant black hole. In their regime of validity, both models are shown to be more accurate than existing models by at least an order of magnitude, with errors comparable to the estimated errors in the numerical relativity simulations.

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Dates: 2019-05-222019
Publication Status: Published in print
Pages: 12 pages, 9 figures
Publishing info: -
Rev. Type: -
Identifiers: arXiv: 1905.09300
URI: http://arxiv.org/abs/1905.09300
DOI: 10.1103/PhysRevResearch.1.033015
Degree: -

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### Source 1

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Title: Physical Review Research
Source Genre: Journal
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Publ. Info: College Park, Maryland, United States : American Physical Society (APS)
Pages: - Volume / Issue: 1 Sequence Number: 033015 Start / End Page: - Identifier: ISSN: 2643-1564
CoNE: https://pure.mpg.de/cone/journals/resource/2643-1564