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  Horizon Pretracking

Schnetter, E., Herrmann, F., & Pollney, D. (2005). Horizon Pretracking. Physical Review D, 71: 044033.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4E81-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4E82-6
Genre: Journal Article

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0410081.pdf (Preprint), 283KB
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 Creators:
Schnetter, Erik1, Author
Herrmann, Frank1, Author
Pollney, Denis2, Author              
Affiliations:
1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              
2Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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 Abstract: We introduce horizon pretracking as a method for analysing numerically generated spacetimes of merging black holes. Pretracking consists of following certain modified constant expansion surfaces during a simulation before a common apparent horizon has formed. The tracked surfaces exist at all times, and are defined so as to include the common apparent horizon if it exists. The method provides a way for finding this common apparent horizon in an efficient and reliable manner at the earliest possible time. We can distinguish inner and outer horizons by examining the distortion of the surface. Properties of the pretracking surface such as its expansion, location, shape, area, and angular momentum can also be used to predict when a common apparent horizon will appear, and its characteristics. The latter could also be used to feed back into the simulation by adapting e.g. boundary or gauge conditions even before the common apparent horizon has formed.

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Language(s): eng - English
 Dates: 2005
 Publication Status: Published in print
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 Identifiers: eDoc: 204982
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 71 Sequence Number: 044033 Start / End Page: - Identifier: -