Mathematics – Logic
Scientific paper
May 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..428..803w&link_type=abstract
Fourth Huntsville gamma-ray burst symposium. AIP Conference Proceedings, Volume 428, pp. 803-807 (1998).
Mathematics
Logic
Gamma-Ray Sources, Gamma-Ray Bursts, Radiation Mechanisms, Polarization, Star Formation, Cosmology
Scientific paper
Gamma-ray bursts are much brighter than supernovae, and could therefore possibly probe the Universe to high redshift. Since most proposed mechanisms for GRBs link them closely to deaths of massive stars, it is a reasonable ansatz to assume that their rate density in the past was proportional to the star formation rate. Work by Wijers et al. [16] does indeed show that the GRB flux distribution calculated from this assumption agrees well with the data. However, the implied luminosity of GRBs is 20 times higher, and the density 150 times lower, than for conventional no-evolution fits to a cosmological distribution. I briefly discuss some implications of this finding for GRBs and cosmology.
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