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  An explicit harmonic code for black-hole evolution using excision

Szilagyi, B., Pollney, D., Rezzolla, L., Thornburg, J., & Winicour, J. (2007). An explicit harmonic code for black-hole evolution using excision. Classical and Quantum Gravity, 24, S275-S293. Retrieved from http://www.iop.org/EJ/abstract/0264-9381/24/12/S18.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-49E9-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-49ED-F
Genre: Journal Article

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 Creators:
Szilagyi, Bela1, Author              
Pollney, Denis1, Author              
Rezzolla, Luciano1, Author              
Thornburg, Jonathan2, Author
Winicour, Jeffrey2, Author
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              
2AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, ou_24008              

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 Abstract: We describe an explicit in time, finite-difference code designed to simulate black holes by using the excision method. The code is based upon the harmonic formulation of the Einstein equations and incorporates several features regarding the well-posedness and numerical stability of the initial-boundary problem for the quasilinear wave equation. After a discussion of the equations solved and of the techniques employed, we present a series of testbeds carried out to validate the code. Such tests range from the evolution of isolated black holes to the head-on collision of two black holes and then to a binary black hole inspiral and merger. Besides assessing the accuracy of the code, the inspiral and merger test has revealed that individual apparent horizons can touch and even intersect. This novel feature in the dynamics of the marginally trapped surfaces is unexpected but consistent with theorems on the properties of apparent horizons.

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 Dates: 2007
 Publication Status: Published in print
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 Identifiers: eDoc: 319991
Other: arXiv:gr-qc/0612150v2
URI: http://www.iop.org/EJ/abstract/0264-9381/24/12/S18
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Title: Classical and Quantum Gravity
Source Genre: Journal
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Pages: - Volume / Issue: 24 Sequence Number: - Start / End Page: S275 - S293 Identifier: -