Astrophysics with core-collapse supernova gravitational wave signals in the next generation of gravitational wave detectors

Vincent Roma, Jade Powell, Ik Siong Heng, and Raymond Frey
Phys. Rev. D 99, 063018 – Published 26 March 2019

Abstract

The next generation of gravitational wave detectors will improve the detection prospects for gravitational waves from core-collapse supernovae. The complex astrophysics involved in core-collapse supernovae pose a significant challenge to modeling such phenomena. The Supernova Model Evidence Extractor (SMEE) attempts to capture the main features of gravitational wave signals from core-collapse supernovae by using numerical relativity waveforms to create approximate models. These models can then be used to perform Bayesian model selection to determine if the targeted astrophysical feature is present in the gravitational wave signal. In this paper, we extend SMEE’s model selection capabilities to include features in the gravitational wave signal that are associated with g-modes and the standing accretion shock instability. For the first time, we test SMEE’s performance using simulated data for planned future detectors, such as the Einstein Telescope, Cosmic Explorer, and LIGO Voyager. Further to this, we show how the performance of SMEE is improved by creating models from the spectrograms of supernova waveforms instead of their time-series waveforms that contain stochastic features. In third generation detector configurations, we find that about 50% of neutrino-driven simulations were detectable at 100 kpc, and 10% at 275 kpc. The explosion mechanism was correctly determined for all detected signals.

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  • Received 25 January 2019

DOI:https://doi.org/10.1103/PhysRevD.99.063018

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Gravitation, Cosmology & Astrophysics

Authors & Affiliations

Vincent Roma1, Jade Powell2, Ik Siong Heng3, and Raymond Frey1

  • 1University of Oregon, Eugene, Oregon 97403, USA
  • 2OzGrav, Swinburne University of Technology, Hawthorn, Melbourne, Victoria 3122, Australia
  • 3University of Glasgow, Physics and Astronomy, Kelvin Building, Glasgow, Lanarkshire G128QQ, United Kingdom

See Also

Inferring core-collapse supernova physics with gravitational waves

J. Logue, C. D. Ott, I. S. Heng, P. Kalmus, and J. H. C. Scargill
Phys. Rev. D 86, 044023 (2012)

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Vol. 99, Iss. 6 — 15 March 2019

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