Physics
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..990..504y&link_type=abstract
FIRST STARS III: First Stars II Conference. AIP Conference Proceedings, Volume 990, pp. 504-506 (2008).
Physics
Population Iii Stars, Star Formation, Gamma-Ray Sources, Gamma-Ray Bursts, Distances, Redshifts, Radial Velocities, Spatial Distribution Of Galaxies
Scientific paper
We estimate a GRB formation rate based on the relation between the spectral peak energy (Ep) and the peak luminosity. This relation is derived combining the data of Ep and the peak luminosities by BeppoSAX, BATSE, HETE-2, Integral, Konus, RHESSI and Swift, and it looks considerably tighter and more reliable than the relations suggested by the previous works. In this paper, we show the revised Ep-luminosity (Yonetoku) relation. 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
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