Physical Difference between the short and long GRBs

Details Physical Difference between the short and long GRBs Physical Difference between the short and long GRBs

2007-02-06

arxiv.org/abs/astro-ph/0702152v1

Baltic Astron. 12 (2004) 207-210

Astronomy and Astrophysics

Astrophysics

2 figures

Scientific paper

We provided separate bivariate log-normal distribution fits to the BATSE short and long burst samples using the durations and fluences. We show that these fits present an evidence for a power-law dependence between the fluence and the duration, with a statistically significant different index for the long and short groups. We argue that the effect is probably real, and the two subgroups are different physical phenomena. This may provide a potentially useful constraint for models of long and short bursts.

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