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Rotating collapse of stellar iron cores in general relativity

Rotating collapse of stellar iron cores in general relativity
Rotating collapse of stellar iron cores in general relativity
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.
0264-9381
S139-S154
Ott, Christian D.
469a0ffb-1ec2-4b89-9b64-69a7927f8aa9
Dimmelmeier, Harald
b6fb5417-8f1d-4689-beb9-26a19edc399f
Marek, Andreas
3f0c217e-e80f-41f2-a949-5725a7d4e54e
Janka, Hans-Thomas
f34ef326-3128-4f32-97a6-e15eda98271e
Zink, Burkhard
ee1f181d-bc8e-4bf7-8633-602ba9724a96
Hawke, Ian
fc964672-c794-4260-a972-eaf818e7c9f4
Schnetter, Erik
fa61f1d3-135d-47af-80e2-4285f37a1e24
Ott, Christian D.
469a0ffb-1ec2-4b89-9b64-69a7927f8aa9
Dimmelmeier, Harald
b6fb5417-8f1d-4689-beb9-26a19edc399f
Marek, Andreas
3f0c217e-e80f-41f2-a949-5725a7d4e54e
Janka, Hans-Thomas
f34ef326-3128-4f32-97a6-e15eda98271e
Zink, Burkhard
ee1f181d-bc8e-4bf7-8633-602ba9724a96
Hawke, Ian
fc964672-c794-4260-a972-eaf818e7c9f4
Schnetter, Erik
fa61f1d3-135d-47af-80e2-4285f37a1e24

Ott, Christian D., Dimmelmeier, Harald, Marek, Andreas, Janka, Hans-Thomas, Zink, Burkhard, Hawke, Ian and Schnetter, Erik (2007) Rotating collapse of stellar iron cores in general relativity. Classical and Quantum Gravity, 24 (12), S139-S154. (doi:10.1088/0264-9381/24/12/S10).

Record type: Article

Abstract

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.

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More information

Submitted date: 21 December 2006
Published date: 30 May 2007

Identifiers

Local EPrints ID: 45404
URI: http://eprints.soton.ac.uk/id/eprint/45404
ISSN: 0264-9381
PURE UUID: a6ef514c-9ae6-4bb9-927a-d4df58f451cb
ORCID for Ian Hawke: ORCID iD orcid.org/0000-0003-4805-0309

Catalogue record

Date deposited: 29 Mar 2007
Last modified: 09 Jan 2022 03:19

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Contributors

Author: Christian D. Ott
Author: Harald Dimmelmeier
Author: Andreas Marek
Author: Hans-Thomas Janka
Author: Burkhard Zink
Author: Ian Hawke ORCID iD
Author: Erik Schnetter

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