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  Magnetized Neutron-Star Mergers and Gravitational-Wave Signals

Anderson, M., Hirschmann, E. W., Lehner, L., Liebling, S. L., Motl, P. M., Neilsen, D., et al. (2008). Magnetized Neutron-Star Mergers and Gravitational-Wave Signals. Physical Review Letters, 100(19): 191101. doi:10.1103/PhysRevLett.100.191101.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-62DB-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-62DD-2
Genre: Journal Article

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prl100-191101.pdf (Publisher version), 4MB
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 Creators:
Anderson, Matthew1, Author
Hirschmann, Eric W.1, Author
Lehner, Luis1, Author
Liebling, Steven L.1, Author
Motl, Patrick M.1, Author
Neilsen, David1, Author
Palenzuela, Carlos2, Author              
Tohline, Joel E.1, Author
Affiliations:
1External Organizations, , , escidoc:persistent22              
2Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, escidoc:24013              

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 Abstract: We investigate the influence of magnetic fields upon the dynamics of, and resulting gravitational waves from, a binary neutron-star merger in full general relativity coupled to ideal magnetohydrodynamics. We consider two merger scenarios: one where the stars have aligned poloidal magnetic fields and one without. Both mergers result in a strongly differentially rotating object. In comparison to the nonmagnetized scenario, the aligned magnetic fields delay the full merger of the stars. During and after merger we observe phenomena driven by the magnetic field, including Kelvin-Helmholtz instabilities in shear layers, winding of the field lines, and transition from poloidal to toroidal magnetic fields. These effects not only mediate the production of electromagnetic radiation, but also can have a strong influence on the gravitational waves. Thus, there are promising prospects for studying such systems with both types of waves.

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 Dates: 2008-05
 Publication Status: Published in print
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 Identifiers: DOI: 10.1103/PhysRevLett.100.191101
eDoc: 374072
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Title: Physical Review Letters
Source Genre: Journal
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Pages: - Volume / Issue: 100 (19) Sequence Number: 191101 Start / End Page: - Identifier: ISSN: 1079-7114