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  Rotating Collapse of Stellar Iron Cores in General Relativity

Ott, C. D., Dimmelmeier, H., Marek, A., Janka, H.-T., Zink, B., Hawke, I., et al. (2007). Rotating Collapse of Stellar Iron Cores in General Relativity. Classical and Quantum Gravity, 24(12 Sp. Iss. Sp. Iss. SI), S139-S154.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4831-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4832-A
Genre: Conference Paper

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cqg7_12_s10.pdf (Publisher version), 431KB
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 Creators:
Ott, Christian D.1, Author
Dimmelmeier, Harald, Author
Marek, Andreas, Author
Janka, Hans-Thomas, Author
Zink, Burkhard, Author
Hawke, Ian, Author
Schnetter, Erik1, Author
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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 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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 Dates: 2007-06-21
 Publication Status: Published in print
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 Identifiers: eDoc: 293694
DOI: 10.1088/0264-9381/24/12/S10
Other: arXiv:astro-ph/0612638
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Title: New Frontiers in Numerical Relativity Conference
Place of Event: Albert Einstein Institute, Potsdam, Germany
Start-/End Date: 2006-07-17 - 2006-07-21

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Title: Classical and Quantum Gravity
Source Genre: Journal
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Pages: - Volume / Issue: 24 (12 Sp. Iss. Sp. Iss. SI) Sequence Number: - Start / End Page: S139 - S154 Identifier: -