Evidence of a long-duration component in the prompt emission of short gamma-ray bursts detected with BeppoSAX

Enrico Montanari, Filippo Frontera, Cristiano Guidorzi, Massimo Rapisarda

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Abstract

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. © 2005. The American Astronomical Society. All rights reserved.
Original languageEnglish
Pages (from-to)-
JournalAstrophysical Journal
Volume625
Issue number1 II
DOIs
Publication statusPublished - 20 May 2005
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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