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

P. A. Mazzali, A. I. McFadyen, S. E. Woosley, E. Pian, M. Tanaka

Research output: Contribution to journalArticle

70 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)67-71
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society
Volume443
Issue number1
DOIs
Publication statusPublished - 2014 Aug

Keywords

  • Gamma-ray burst: general
  • Stars: magnetars
  • Supernovae: general

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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