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Physical Difference between the short and long GRBs

L. G. Balazs·Z. Bagoly·I. Horvath·A. Meszaros·P. Meszaros
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Abstract

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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L. G. Balazs, Z. Bagoly, I. Horvath, A. Meszaros, P. Meszaros. 2007-02-06. Physical Difference between the short and long GRBs. https://arxiv.org/abs/astro-ph/0702152

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