Gamma-ray burst formation rate inferred from the spectral peak energy-peak luminosity relation

D. Yonetoku, T. Murakami, T. Nakamura, R. Yamazaki, A. K. Inoue, K. Ioka

Research output: Contribution to journalArticlepeer-review

492 Citations (Scopus)

Abstract

We estimate a gamma-ray burst (GRB) formation rate based on the new relation between the spectral peak energy (Ep) and the peak luminosity. The new relation is derived by combining the data of Ep and the peak luminosities by BeppoSAX and BATSE, and it looks considerably tighter and more reliable than the relations suggested by the previous works. Using the new Ep-luminosity relation, we estimate redshifts of the 689 GRBs without known distances in the BATSE catalog and derive a GRB formation rate as a function of the redshift. For the redshift range of 0 ≤ z ≤ 2, the GRB formation rate increases and is well correlated with the star formation rate, while it keeps constant toward z ∼ 12. We also discuss the luminosity function and the redshift dependence of the intrinsic luminosity (luminosity evolution).

Original languageEnglish
Pages (from-to)935-951
Number of pages17
JournalAstrophysical Journal
Volume609
Issue number2 I
DOIs
Publication statusPublished - 2004 Jul 10
Externally publishedYes

Keywords

  • Early universe
  • Gamma rays: bursts

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint

Dive into the research topics of 'Gamma-ray burst formation rate inferred from the spectral peak energy-peak luminosity relation'. Together they form a unique fingerprint.

Cite this