Volume 392, Number 3, September IV 2002
|Page(s)||791 - 793|
|Section||Cosmology (including clusters of galaxies)|
|Published online||09 September 2002|
A further study of the BATSE Gamma-Ray Burst duration distribution
Dept. of Physics, Bolyai Military University, Budapest, POB 12, 1456, Hungary
Corresponding author: email@example.com
Accepted: 27 May 2002
Two classes of gamma-ray bursts have been identified so far, characterized by durations shorter and longer than about 2 s. In 1998 two independent papers indicated the existence of the third class of the bursts with duration between approximately 2 and 10 s. In this paper, using the full BATSE Catalog, the maximum likelihood estimation is presented, which gives a 0.5% probability for having only two subclasses. A Monte-Carlo simulation also confirms this probability.
Key words: gamma rays: bursts, theory, observations / methods: data analysis, observational, statistical
© ESO, 2002
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