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          Institute: MPI für Gravitationsphysik     Collection: Astrophysical Relativity     Display Documents



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ID: 206110.0, MPI für Gravitationsphysik / Astrophysical Relativity
The close-limit approximation to neutron star collisions
Authors:Allen, Gabrielle; Andersson, Nils; Kokkotas, Kostas D.; Laguna, Pablo; Pullin, Jorge; Ruoff, Johannes
Date of Publication (YYYY-MM-DD):1999-11-15
Title of Journal:Physical Review D
Volume:60
Issue / Number:10
Sequence Number of Article:104021
Copyright:Jahrbuch 2001, Copyright MPG 2001
Review Status:not specified
Audience:Not Specified
Intended Educational Use:No
Abstract / Description: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].
External Publication Status:published
Document Type:Article
Communicated by:Bernhard F. Schutz
Affiliations:MPI für Gravitationsphysik/Astrophysical Relativity
Identifiers:LOCALID:arXiv:gr-qc/9903100v1
DOI:10.1103/PhysRevD.60.104021
ISSN:0556-2821
URL:http://link.aps.org/doi/10.1103/PhysRevD.60.104021
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Phy.Rev.D.60.104021.pdf  [102,00 Kb] [Comment:Online Journal]  
 
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