2008/01/01 by I. Horváth, I. Horvath, L. G. Balázs +10 · 2 citations
Mathematics · Physics and Astronomy · #Acoustics #Astronomy #Astrophysics #Distribution (mathematics) #Duration (music) #Gamma distribution #Gamma-ray burst #Gamma-ray bursts and supernovae #Mathematics #Maximum likelihood #Monte Carlo method #Physics #Probability distribution #Spectral analysis #Statistics #Swift #astro-ph.CO #astro-ph.HE
paper · pdf · doi:10.1063/1.3027961
published in AIP conference proceedings, 67-70 (American Institute of Physics) · NANJING GAMMA-RAY BURST CONFERENCE 2008
openalex publication_date 2008/01/01 · arxiv created 2009/06/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Two classes of gamma‐ray bursts have been identified in the BATSE catalogs characterized by durations shorter and longer than about 2 seconds. There are, however, some indications for the existence of a third type of burst. Swift satellite detectors have different spectral sensitivity than pre‐Swift ones for gamma‐ray bursts. Therefore it is worth to reanalyze the durations and their distribution and also the classification of GRBs. Using The First BAT Catalog the maximum likelihood estimation was used to analyzed the duration distribution of GRBs. The three log‐normal fit is significantly (99.54% probability) better than the two for the duration distribution. Monte‐Carlo simulations also confirm this probability (99.2%).