Consistency of GRB durations and spectra with standard cosmology

Details Consistency of GRB durations and spectra with standard cosmology Consistency of GRB durations and spectra with standard cosmology

Aug 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aipc..384..446k&link_type=abstract

Gamma-ray bursts: 3rd Huntsville symposium. AIP Conference Proceedings, Volume 384, pp. 446-450 (1996).

Mathematics

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Gamma-Ray Sources, Gamma-Ray Bursts, Observational Cosmology

Scientific paper

We present an analysis of the consistency of burst durations and spectra with a population of nonevolving sources at Gpc distances. The parameters T90 (T50) and Ep are calculated using data obtained with BATSE, and are used to characterize burst durations and spectra, respectively. Effects consistent with cosmological redshift and time dilation have been reported in the Ep and T90 data, respectively. We simultaneously examine the distributions of these parameters for cosmological time dilation and redshift effects, being careful to avoid the introduction of selection effects. We show that the T90 (T50) data are currently less constraining than Ep; the data do not require time dilation, but are consistent with the effect observed in the Ep data.

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