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An upper limit to the energy of gamma-ray bursts indicates that GRBs/SNe are powered by magnetars

Mazzali, PA and McFadyen, AI and Woosley, SE and Pian, E and Tanaka, M (2014) An upper limit to the energy of gamma-ray bursts indicates that GRBs/SNe are powered by magnetars. Monthly Notices of the Royal Astronomical Society, 443 (1). pp. 67-71. ISSN 0035-8711

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Abstract

The kinetic energy of supernovae (SNe) accompanied by gamma-ray bursts (GRBs) tends to cluster near 1052 erg, with 2 × 1052 erg an upper limit to which no compelling exceptions are found (assuming a certain degree of asphericity), and it is always significantly larger than the intrinsic energy of the GRB themselves (corrected for jet collimation). This energy is strikingly similar to the maximum rotational energy of a neutron star rotating with period 1 ms. It is therefore proposed that all GRBs associated with luminous SNe are produced by magnetars. GRBs that result from black hole formation (collapsars) may not produce luminous SNe. X-ray flashes, which are associated with less energetic SNe, are produced by neutron stars with weaker magnetic field or lower spin.

Item Type: Article
Additional Information: This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record MNRAS (September 1, 2014) 443 (1): 67-71 is available online at: http://dx.doi.org/10.1093/mnras/stu1124
Uncontrolled Keywords: 0201 Astronomical And Space Sciences
Subjects: Q Science > QB Astronomy
Divisions: Astrophysics Research Institute
Publisher: Oxford University Press
Related URLs:
Date Deposited: 08 Feb 2016 11:07
Last Modified: 06 Sep 2017 23:21
DOI or Identification number: 10.1093/mnras/stu1124
URI: http://researchonline.ljmu.ac.uk/id/eprint/2860

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