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3D collapse of rotating stellar iron cores in general relativity with microphysics

3D collapse of rotating stellar iron cores in general relativity with microphysics
3D collapse of rotating stellar iron cores in general relativity with microphysics
We present results from the first 2D and 3D 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 fully nonlinear 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 one of our models that leads to prolonged narrow-band GW emission at ~930 Hz over several tens of milliseconds.
0031-9007
261101-[4pp]
Ott, C.D.
09af5461-86ca-4840-be3a-90f258b1f6be
Dimmelmeier, H.
3f902527-adf6-46ca-89f2-1d41c3c7191f
Marek, A.
cd4544ef-e4c1-4575-b5fc-b778932c5f33
Janka, H.-T.
d99ea795-8b04-485a-856f-cb9218d66840
Hawke, I.
fc964672-c794-4260-a972-eaf818e7c9f4
Zink, B.
09c0bc5c-8f86-4668-bb83-7adbd2f58482
Schnetter, E.
544c2aff-bf71-45af-8d32-230f486eb837
Ott, C.D.
09af5461-86ca-4840-be3a-90f258b1f6be
Dimmelmeier, H.
3f902527-adf6-46ca-89f2-1d41c3c7191f
Marek, A.
cd4544ef-e4c1-4575-b5fc-b778932c5f33
Janka, H.-T.
d99ea795-8b04-485a-856f-cb9218d66840
Hawke, I.
fc964672-c794-4260-a972-eaf818e7c9f4
Zink, B.
09c0bc5c-8f86-4668-bb83-7adbd2f58482
Schnetter, E.
544c2aff-bf71-45af-8d32-230f486eb837

Ott, C.D., Dimmelmeier, H., Marek, A., Janka, H.-T., Hawke, I., Zink, B. and Schnetter, E. (2007) 3D collapse of rotating stellar iron cores in general relativity with microphysics. Physical Review Letters, 98 (26), 261101-[4pp]. (doi:10.1103/PhysRevLett.98.261101).

Record type: Article

Abstract

We present results from the first 2D and 3D 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 fully nonlinear 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 one of our models that leads to prolonged narrow-band GW emission at ~930 Hz over several tens of milliseconds.

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Submitted date: 29 September 2006
Published date: 29 June 2007

Identifiers

Local EPrints ID: 45410
URI: http://eprints.soton.ac.uk/id/eprint/45410
ISSN: 0031-9007
PURE UUID: 806e4d72-da83-4dd8-9fa5-3b100964b55c
ORCID for I. Hawke: ORCID iD orcid.org/0000-0003-4805-0309

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Date deposited: 29 Mar 2007
Last modified: 12 Apr 2022 01:38

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Contributors

Author: C.D. Ott
Author: H. Dimmelmeier
Author: A. Marek
Author: H.-T. Janka
Author: I. Hawke ORCID iD
Author: B. Zink
Author: E. Schnetter

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