Results in Gamma-Ray Burst Observations and the Use of GRBs to Explore the Early Universe

Details Results in Gamma-Ray Burst Observations and the Use of GRBs to Explore the Early Universe Results in Gamma-Ray Burst Observations and the Use of GRBs to Explore the Early Universe

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aspc..289..305m&link_type=abstract

The Proceedings of the IAU 8th Asian-Pacific Regional Meeting, Volume I, held 2-5 July 2002 at National Center of Sciences, Hito

Astronomy and Astrophysics

Astronomy

Scientific paper

The most recent results and puzzles in Gamma-Ray Burst observations (GRB), except the HETE-II are shortly reviewed in this paper. We focus on the use of GRBs to explore the early universe. We found a very weak correlation between the radiation hardness and the known GRB distances in the BATSE catalogue. Using a relation in the correlation, we give distances to the unknown bright 344 BATSE GRBs and estimate a star formation rate (SFR) up to z about 5. We compare our result with the most popular SFR of Madau et al. (1996) and the pioneering work of Fenimore et al. (2000).

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