Detailed classification of swift's gamma-ray bursts

I. Horváth, Z. Bagoly, L. Balázs, A. De Ugarte Postigo, P. Veres, A. Mészáros

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Earlier classification analyses found three types of gamma-ray bursts (short, long, and intermediate in duration) in the BATSE sample. Recent works have shown that these three groups are also present in the RHESSI and BeppoSAX databases. The duration distribution analysis of the bursts observed by the Swift satellite also favors the three-component model. In this paper, we extend the analysis of the Swift data with spectral information. We show, using the spectral hardness and duration simultaneously, that the maximum likelihood method favors the three-component against the two-component model. The likelihood also shows that a fourth component is not needed.

Original languageEnglish
Pages (from-to)552-557
Number of pages6
JournalAstrophysical Journal
Volume713
Issue number1
DOIs
Publication statusPublished - 2010

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gamma ray bursts
hardness
bursts
analysis
method
distribution

Keywords

  • Gamma rays: general
  • Methods: statistical

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics
  • Nuclear and High Energy Physics

Cite this

Detailed classification of swift's gamma-ray bursts. / Horváth, I.; Bagoly, Z.; Balázs, L.; De Ugarte Postigo, A.; Veres, P.; Mészáros, A.

In: Astrophysical Journal, Vol. 713, No. 1, 2010, p. 552-557.

Research output: Contribution to journalArticle

Horváth, I. ; Bagoly, Z. ; Balázs, L. ; De Ugarte Postigo, A. ; Veres, P. ; Mészáros, A. / Detailed classification of swift's gamma-ray bursts. In: Astrophysical Journal. 2010 ; Vol. 713, No. 1. pp. 552-557.
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