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          Institute: MPI für Gravitationsphysik     Collection: Astrophysical Relativity     Display Documents



  history
ID: 293694.0, MPI für Gravitationsphysik / Astrophysical Relativity
Rotating Collapse of Stellar Iron Cores in General Relativity
Authors:Ott, Christian D.; Dimmelmeier, Harald; Marek, Andreas; Janka, Hans-Thomas; Zink, Burkhard; Hawke, Ian; Schnetter, Erik
Date of Publication (YYYY-MM-DD):2007-06-21
Title of Journal:Classical and Quantum Gravity
Volume (in Journal):24
Issue / Number:12 Sp. Iss. Sp. Iss. SI
Start Page:S139
End Page:S154
Name of Conference/Meeting:New Frontiers in Numerical Relativity Conference
Place of Conference/Meeting:Albert Einstein Institute, Potsdam, Germany
(Start) Date of Conference/Meeting
 (YYYY-MM-DD):
2006-07-17
End Date of Conference/Meeting 
 (YYYY-MM-DD):
2006-07-21
Review Status:not specified
Audience:Not Specified
Abstract / Description:We present results from the first 2+1 and 3+1 simulations of the collapse of rotating stellar iron cores in general relativity employing a finite-temperature equation of state and an approximate treatment of deleptonization during collapse. We compare full 3+1 and conformally-flat spacetime evolution methods and find that the conformally-flat treatment is sufficiently accurate for the core-collapse supernova problem. We focus on the gravitational wave (GW) emission from rotating collapse, core bounce, and early postbounce phases. Our results indicate that the GW signature of these phases is much more generic than previously estimated. In addition, we track the growth of a nonaxisymmetric instability of dominant m = 1 character in two of our models that leads to prolonged narrow-band GW emission at ~ 920-930 Hz over several tens of milliseconds.
External Publication Status:published
Document Type:Conference-Paper
Communicated by:Bernhard F. Schutz
Affiliations:MPI für Gravitationsphysik/Astrophysical Relativity
Identifiers:DOI:10.1088/0264-9381/24/12/S10
LOCALID:arXiv:astro-ph/0612638
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