2005/04/08 by Enrico Montanari, F. Frontera, Filippo Frontera +3
Physics and Astronomy · #Astro and Planetary Science #Gamma-ray bursts and supernovae #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.1086/430759
published as Astrophys.J. 625 (2005) L17-L21 · 12 pages, 6 figures, accepted for publication in ApJL
arxiv created 2005/04/08 · openalex publication_date 2005/05/02 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
A statistical study on the light curves of all the short gamma-ray bursts (GRBs) detected with the Gamma Ray Burst Monitor (GRBM) aboard BeppoSAX is reported. Evidence of a very weak and long-duration component associated with these events in the two 1 s ratemeters of the GRBM (40-700 and >100 keV) is found. It starts a few tens of seconds before the burst and continues for about 30 s after the burst. The overall hardness of this component is comparable to that of the event itself. The detection of a signal before the onset time and the hardness are consistent with an interpretation of the long-duration component in terms of prompt emission associated with short GRBs.