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

Roma, V., Powell, J., Heng, I. S. and Frey, R. (2019) Astrophysics with core-collapse supernova gravitational wave signals in the next generation of gravitational wave detectors. Physical Review D, 99(6), 063018. (doi: 10.1103/PhysRevD.99.063018)

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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.

Item Type:Articles
Additional Information:J. P. is supported by the Australian Research Council Centre of Excellence for Gravitational Wave Discovery (OzGrav), through Project No. CE170100004. V. R. and R. F. are supported by National Science Foundation Grant No. NSF PHY1607336. I. S. H. is supported by the Science and Technology Facilities Council Grant No. ST/L000946/1, and the Scottish Universities Physics Alliance. The authors are grateful for computational resources provided by the LIGO Lab and supported by National Science Foundation Grants No. PHY-0757058 and No. PHY-0823459.
Glasgow Author(s) Enlighten ID:Heng, Professor Ik Siong and Powell, Miss Jade
Authors: Roma, V., Powell, J., Heng, I. S., and Frey, R.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review D
Publisher:American Physical Society
ISSN (Online):2470-0029
Copyright Holders:Copyright © 2019 APS
First Published:First published in Physical Review D 99:063018
Publisher Policy:Reproduced under a Creative Commons license
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
624341Investigations in Gravitational Radiation / Particle Astrophysics Capital equipmentSheila RowanScience & Technology Facilities Council (STFC)ST/L000946/1S&E P&A - PHYSICS & ASTRONOMY