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Inferring core-collapse supernova physics with gravitational waves

Logue, J. and Ott, C. D. and Heng, I. S. and Kalmus, P. and Scargill, J. H. C. (2012) Inferring core-collapse supernova physics with gravitational waves. Physical Review D, 86 (4). Art. No. 044023. ISSN 0556-2821. http://resolver.caltech.edu/CaltechAUTHORS:20121001-141822842

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Abstract

Stellar collapse and the subsequent development of a core-collapse supernova explosion emit bursts of gravitational waves (GWs) that might be detected by the advanced generation of laser interferometer gravitational-wave observatories such as Advanced LIGO, Advanced Virgo, and LCGT. GW bursts from core-collapse supernovae encode information on the intricate multidimensional dynamics at work at the core of a dying massive star and may provide direct evidence for the yet uncertain mechanism driving supernovae in massive stars. Recent multidimensional simulations of core-collapse supernovae exploding via the neutrino, magnetorotational, and acoustic explosion mechanisms have predicted GW signals which have distinct structure in both the time and frequency domains. Motivated by this, we describe a promising method for determining the most likely explosion mechanism underlying a hypothetical GW signal, based on principal component analysis and Bayesian model selection. Using simulated Advanced LIGO noise and assuming a single detector and linear waveform polarization for simplicity, we demonstrate that our method can distinguish magnetorotational explosions throughout the Milky Way (D≲10  kpc) and explosions driven by the neutrino and acoustic mechanisms to D≲2  kpc. Furthermore, we show that we can differentiate between models for rotating accretion-induced collapse of massive white dwarfs and models of rotating iron core collapse with high reliability out to several kpc.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevD.86.044023DOIUNSPECIFIED
http://link.aps.org/doi/10.1103/PhysRevD.86.044023PublisherUNSPECIFIED
Additional Information:© 2012 American Physical Society. Received 23 February 2012; published 17 August 2012. We thank the Basel, MPA Garching, ORNL, and Princeton core-collapse supernova modeling groups for making their gravitational waveforms publicly available. We are happy to acknowledge helpful exchanges with E. Abdikamalov, A. Burrows, Y. Chen, D. Chernoff, N. Christensen, T. Loredo, J. Murphy, J. Nordhaus, L. Santamaria, B. Schutz, M. Vallisneri, A. Weinstein, S. Wesolowski, and the core-collapse supernova working group of the LIGO Scientific Collaboration and the Virgo Collaboration. C. D. O. is supported in part by the Sherman Fairchild Foundation and by the National Science Foundation under Grant No. PHY-0904015. Some of the results presented in this article were obtained through computations on the Caltech compute cluster "Zwicky" (NSF MRI Award No. PHY-0960291), on the NSF Teragrid under Grant No. TG-PHY100033, on machines of the Louisiana Optical Network Initiative under Grant No. loni_numrel07, and at the National Energy Research Scientific Computing Center (NERSC), which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. I. S. H. and J. L. gratefully acknowledge the support of the U.K. Science and Technology Facilities Council and the Scottish Universities Physics Alliance (SUPA).
Group:TAPIR
Funders:
Funding AgencyGrant Number
Sherman Fairchild FoundationUNSPECIFIED
NSFPHY-0904015
NSF MRIPHY-0960291
NSFTG-PHY100033
Louisiana Optical Network Initiativeloni_numrel07
National Energy Research Scientific Computing Center (NERSC)UNSPECIFIED
Department of Energy (DOE)DE-AC02-05CH11231
Science and Technology Facilities Council (STFC)UNSPECIFIED
Scottish Universities Physics AllianceUNSPECIFIED
Classification Code:PACS: 04.30.Tv, 04.80.Nn, 05.45.Tp, 97.60.Bw
Record Number:CaltechAUTHORS:20121001-141822842
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20121001-141822842
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34601
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:02 Oct 2012 14:54
Last Modified:27 Dec 2012 02:47

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