Cosmological parametrization of gamma ray burst models

Details Cosmological parametrization of gamma ray burst models Cosmological parametrization of gamma ray burst models

1996-07-02

arxiv.org/abs/astro-ph/9607008v1

Astronomy and Astrophysics

Astrophysics

uuencoded gzipped tarred TeX and PostScript files, 9 pages, 2 figures

Scientific paper

Using three parametrizations of the gamma ray burst count data comparison is made to cosmological source models. While simple models can fit and faint end slope constraints, the addition of a logarithmic count range variable describing the curvature of the counts shows that models with no evolution or evolution power law in redshift with index less than 10 fail to satisfy simultaneously all three descriptors of the burst data. The cosmological source density that would be required for a fit is illustrated.

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