Can relativistic beaming of gamma-ray bursts mimic cosmological time dilation\?

Details Can relativistic beaming of gamma-ray bursts mimic cosmological time dilation\? Can relativistic beaming of gamma-ray bursts mimic cosmological time dilation\?

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994phrvl..72.3750y&link_type=abstract

Physical Review Letters, Volume 72, Issue 24, June 13, 1994, pp.3750-3753

Mathematics

Logic

9

Gamma-Ray Sources, Gamma-Ray Bursts, Relativity And Gravitation, Jets And Bursts, Galactic Winds And Fountains

Scientific paper

If gamma-ray bursts are at cosmological distances, durations and variability time scales of faint bursts are expected to be systematically longer than those of bright bursts due to cosmological time dilation. A recent analysis of data from the Burst and Transient Source Experiment (BATSE) reported detection of such a signal. We show that relativistic beaming can produce similar flux-duration relations both in the Galactic halo model and in the cosmological model with duration ranges comparable to the reported one.

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