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Revival of the Stalled Core-collapse Supernova Shock Triggered by Precollapse Asphericity in the Progenitor Star

Couch, Sean M. and Ott, Christian D. (2013) Revival of the Stalled Core-collapse Supernova Shock Triggered by Precollapse Asphericity in the Progenitor Star. Astrophysical Journal Letters, 778 (1). Art. No. L7. ISSN 2041-8205. http://resolver.caltech.edu/CaltechAUTHORS:20131223-075453787

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Abstract

Multi-dimensional simulations of advanced nuclear burning stages of massive stars suggest that the Si/O layers of presupernova stars harbor large deviations from the spherical symmetry typically assumed for presupernova stellar structure. We carry out three-dimensional core-collapse supernova simulations with and without aspherical velocity perturbations to assess their potential impact on the supernova hydrodynamics in the stalled-shock phase. Our results show that realistic perturbations can qualitatively alter the postbounce evolution, triggering an explosion in a model that fails to explode without them. This finding underlines the need for a multi-dimensional treatment of the presupernova stage of stellar evolution.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1309.2632arXivDiscussion Paper
http://dx.doi.org/10.1088/2041-8205/778/1/L7 DOIArticle
http://iopscience.iop.org/2041-8205/778/1/L7/PublisherArticle
Additional Information:© 2013 The American Astronomical Society. Received 2013 September 10; accepted 2013 October 16; published 2013 October 30. We acknowledge helpful discussions with E. Abdikamalov, D. Arnett, P. Goldreich, C. Graziani, C. Meakin, E. O’Connor, U. C. T. Gamma, C. Reisswig, L. Roberts, and N. Smith. S.M.C. is supported by NASA through Hubble Fellowship grant No. 51286.01 awarded by the Space Telescope Science Institute. C.D.O. is partially supported by NSF grant nos. AST-1212170, PHY-1151197, and OCI-0905046 and by the Alfred P. Sloan Foundation. The software used in this work was in part developed by the DOE NNSA-ASC OASCR Flash Center at the University of Chicago. The simulations were carried out on computational resources at ALCF at ANL, which is supported by the Office of Science of the US Department of Energy under Contract No. DE-AC02-06CH11357, and on the NSF XSEDE network under computer time allocation TG-PHY100033.
Group:TAPIR
Funders:
Funding AgencyGrant Number
NASA Hubble Fellowship51286.01
NSFAST-1212170
NSFPHY-1151197
NSFOCI-0905046
Alfred P. Sloan FoundationUNSPECIFIED
Department of Energy (DOE) Office of ScienceDE-AC02-06CH11357
NSF XSEDETG-PHY100033
Subject Keywords:hydrodynamics; neutrinos; supernovae: general
Record Number:CaltechAUTHORS:20131223-075453787
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20131223-075453787
Official Citation:Revival of the Stalled Core-collapse Supernova Shock Triggered by Precollapse Asphericity in the Progenitor Star Sean M. Couch and Christian D. Ott 2013 ApJ 778 L7
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43128
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:23 Dec 2013 19:38
Last Modified:29 Aug 2014 14:47

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