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  The close-limit approximation to neutron star collisions

Allen, G., Andersson, N., Kokkotas, K. D., Laguna, P., Pullin, J., & Ruoff, J. (1999). The close-limit approximation to neutron star collisions. Physical Review D, 60(10): 104021. doi:10.1103/PhysRevD.60.104021.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-5815-B Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-5816-9
Genre: Journal Article

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 Creators:
Allen, Gabrielle1, Author
Andersson, Nils, Author
Kokkotas, Kostas D., Author
Laguna, Pablo, Author
Pullin, Jorge, Author
Ruoff, Johannes, Author
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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 Abstract: We develop a close-limit approximation to the head-on collision of two neutron stars similar to that used to treat the merger of black hole binaries. This approximation can serve as a useful benchmark test for future fully non-linear studies. For neutron star binaries, the close-limit approximation involves assuming that the merged object can be approximated as a perturbed, stable neutron star during the ring-down phase of the coalescence. We introduce a prescription for the construction of initial data sets, discuss the physical plausibility of the various assumptions involved, and briefly investigate the character of the gravitational radiation produced during the merger. The numerical results show that several of the merged object’s fluid pulsation modes are excited to a significant level. [S0556-2821(99)06422-X].

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 Dates: 1999-11-15
 Publication Status: Issued
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 Identifiers: eDoc: 206110
Other: arXiv:gr-qc/9903100v1
DOI: 10.1103/PhysRevD.60.104021
URI: http://link.aps.org/doi/10.1103/PhysRevD.60.104021
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Title: Physical Review D
Source Genre: Journal
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Pages: - Volume / Issue: 60 (10) Sequence Number: 104021 Start / End Page: - Identifier: ISSN: 0556-2821