Likelihood Estimation of Gamma Ray Bursts Du- Ration Distribution
نویسنده
چکیده
Bolyai Military University, Budapest, e-mail: [email protected] Two classes of Gamma Ray Bursts have been identified so far, characterized by T90 durations shorter and longer than approximately 2 seconds. It was shown that the BATSE 3B data allow a good fit with three Gaussian distributions in logT90 [4]. In the same Volume in ApJ. another paper suggested that the third class of GRBs is may exist [11]. Using the full BATSE catalog here we present the maximum likelihood estimation, which gives us 0,5% probability to having only two subclasses. The MC simulation confirms this probability.
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