Factor analysis of the long gamma-ray bursts

Z. Bagoly, L. Borgonovo, A. Mészáros, L. Balázs, I. Horváth

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Aims. We study statistically 197 long gamma-ray bursts, detected and measured in detail by the BATSE instrument of the Compton Gamma-Ray Observatory. In the sample, 10 variables, describing for any burst the time behavior of the spectra and other quantities, are collected.Methods. The factor analysis method is used to find the latent random variables describing the temporal and spectral properties of GRBs.Results. The application of this particular method to this sample indicates that five factors and the REpk spectral variable (the ratio of peak energies in the spectrum) describe the sample satisfactorily. Both the pseudo-redshifts inferred from the variability, and the Amati-relation in its original form, are disfavored.

Original languageEnglish
Pages (from-to)51-54
Number of pages4
JournalAstronomy and Astrophysics
Volume493
Issue number1
DOIs
Publication statusPublished - Jan 2009

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factor analysis
gamma ray bursts
Gamma Ray Observatory
random variables
bursts
observatory
energy
method

Keywords

  • Gamma rays: bursts
  • Gamma rays: observations
  • Methods: data analysis
  • Methods: statistical

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Factor analysis of the long gamma-ray bursts. / Bagoly, Z.; Borgonovo, L.; Mészáros, A.; Balázs, L.; Horváth, I.

In: Astronomy and Astrophysics, Vol. 493, No. 1, 01.2009, p. 51-54.

Research output: Contribution to journalArticle

Bagoly, Z. ; Borgonovo, L. ; Mészáros, A. ; Balázs, L. ; Horváth, I. / Factor analysis of the long gamma-ray bursts. In: Astronomy and Astrophysics. 2009 ; Vol. 493, No. 1. pp. 51-54.
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