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  Magnetic field amplification in hypermassive neutron stars via the magnetorotational instability

Siegel, D., & Ciolfi, R. (2015). Magnetic field amplification in hypermassive neutron stars via the magnetorotational instability. In P. Nicolini (Ed.), 1st Karl Schwarzschild Meeting on Gravitational Physics (Springer Proceedings in Physics, 170) (pp. 119-124). Heidelberg u.a.: Springer.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-A5F5-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-3BC1-1
Genre: Book Chapter

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1401.5275.pdf (Preprint), 2MB
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 Creators:
Siegel, Daniel1, Author              
Ciolfi, Riccardo, Author
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:1933290              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE, Astrophysics, Solar and Stellar Astrophysics, astro-ph.SR
 Abstract: Mergers of binary neutron stars likely lead to the formation of a hypermassive neutron star (HMNS), which is metastable and eventually collapses to a black hole. This merger scenario is thought to explain the phenomenology of short gamma-ray bursts (SGRBs). The very high energies observed in SGRBs have been suggested to stem from neutrino-antineutrino annihilation and/or from very strong magnetic fields created during or after the merger by mechanisms like the magnetorotational instability (MRI). Here, we report on results that show for the first time the development of the MRI in HMNSs in three-dimensional, fully general-relativistic magnetohydrodynamic simulations. This instability amplifies magnetic fields exponentially and could be a vital ingredient in solving the SGRB puzzle.

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 Dates: 2014-01-2120152015
 Publication Status: Published in print
 Pages: 6 pages, 3 figures. Proceedings of the Karl Schwarzschild Meeting 2013
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 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1401.5275
URI: http://arxiv.org/abs/1401.5275
DOI: 10.1007/978-3-319-20046-0_14
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Title: 1st Karl Schwarzschild Meeting on Gravitational Physics (Springer Proceedings in Physics, 170)
Source Genre: Book
 Creator(s):
Nicolini, P., Editor
Kaminski, M., Author
Mureika, J., Author
Bleicher, M., Author
Affiliations:
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Publ. Info: Heidelberg u.a. : Springer
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 119 - 124 Identifier: -