Redshifts of the long gamma-ray bursts

Z. Bagoly, I. Csabai, A. Mészáros, P. Mészáros, I. Horváth, L. G. Balázs, R. Vavrek

Research output: Contribution to journalArticlepeer-review


The low energy spectra of some gamma-ray bursts show excess components beside the power-law dependence. The consequences of such a feature allows us to estimate the gamma photometric redshift of long gamma-ray bursts in the BATSE Catalog. There is a good correlation between the measured optical and the estimated gamma photometric redshifts. The estimated redshift values for long bright gamma-ray bursts are up to z=4, while for long faint bursts the redshifts cannot be determined unambiguously by this method (they should be up to 2=20). The redshift distribution of all the gamma-ray bursts with known optical redshifts agrees quite well with the BATSE-based gamma photometric redshift distribution.

Original languageEnglish (US)
Pages (from-to)227-230
Number of pages4
JournalBaltic Astronomy
Issue number2
StatePublished - 2004

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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