A unified model of short and long gamma-ray bursts, X-ray rich gamma-ray bursts, and X-ray flashes

Ryo Yamazaki, Kunihito Ioka, Takashi Nakamura, Kenji Toma

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We propose a possible unified model of short and long gamma-ray bursts (GRBs), X-ray rich GRBs, and X-ray flashes. The jet of a GRB is assumed to consist of multiple sub-jets or sub-shells (i.e., an inhomogeneous jet model). The multiplicity of the sub-jets along a line of sight n s is an important parameter. If n s is large (≫1) the event looks like a long GRB, while if n s = 1, the event looks like a short GRB. Finally, when n s = 0, the event looks like an X-ray flash or an X-ray rich GRB. Furthermore, our model may also explain the bimodal distributions of T 90 duration of BATSE-GRBs.

Original languageEnglish
Pages (from-to)1299-1302
Number of pages4
JournalAdvances in Space Research
Volume38
Issue number7
DOIs
Publication statusPublished - 2006

Keywords

  • Gamma rays: theory
  • Gamma-ray bursts

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)

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