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  The missing link: Merging neutron stars naturally produce jet-like structures and can power short Gamma-Ray Bursts

Rezzolla, L., Giacomazzo, B., Baiotti, L., Granot, J., Kouveliotou, C., & Aloy, M. A. (2011). The missing link: Merging neutron stars naturally produce jet-like structures and can power short Gamma-Ray Bursts. Astrophysical Journal, Letters, 732, L1-L6. doi:10.1088/2041-8205/732/1/L6.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-2917-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-2918-2
Genre: Journal Article

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 Creators:
Rezzolla, Luciano1, Author              
Giacomazzo, Bruno, Author
Baiotti, Luca, Author
Granot, Jonathan, Author
Kouveliotou, Chryssa, Author
Aloy, Miguel A., Author
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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Free keywords: Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE,Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO, Astrophysics, Solar and Stellar Astrophysics, astro-ph.SR,General Relativity and Quantum Cosmology, gr-qc
 Abstract: Short Gamma-Ray Bursts (SGRBs) are among the most luminous explosions in the universe, releasing in less than one second the energy emitted by our Galaxy over one year. Despite decades of observations, the nature of their "central-engine" remains unknown. Considering a binary of magnetized neutron stars and solving Einstein equations, we show that their merger results in a rapidly spinning black hole surrounded by a hot and highly magnetized torus. Lasting over 35 ms and much longer than previous simulations, our study reveals that magnetohydrodynamical instabilities amplify an initially turbulent magnetic field of ~ 10^{12} G to produce an ordered poloidal field of ~ 10^{15} G along the black-hole spin-axis, within a half-opening angle of ~ 30 deg, which may naturally launch a relativistic jet. The broad consistency of our ab-initio calculations with SGRB observations shows that the merger of magnetized neutron stars can provide the basic physical conditions for the central-engine of SGRBs.

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 Dates: 2011-01-222011-03-302011
 Publication Status: Published in print
 Pages: minor changes; matches published version in ApJL; for high-resolution images and animations see http://numrel.aei.mpg.de/images/relativistic-binary-neutron-star-inspirals
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 Rev. Method: -
 Identifiers: arXiv: 1101.4298
DOI: 10.1088/2041-8205/732/1/L6
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Title: Astrophysical Journal, Letters
  Other : ApJL
Source Genre: Journal
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Publ. Info: Chicago, IL : University of Chicago Press for the American Astronomical Society
Pages: - Volume / Issue: 732 Sequence Number: - Start / End Page: L1 - L6 Identifier: ISSN: 0004-637X
CoNE: /journals/resource/954922828215_1