Searching for differences in Swift’s intermediate GRBs

Author： de Ugarte Postigo A. Horváth I. Veres P. Bagoly Z. Kann D. A. Thöne C. C. Balazs L. G. D’Avanzo P. Aloy M. A. Foley S. Campana S. Mao J. Jakobsson P. Covino S. Fynbo J. P. U. Gorosabel J. Castro-Tirado A. J. Amati L. Nardini M.

Publisher： Edp Sciences

E-ISSN： 1432-0746|525|issue|A109-A109

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.525, Iss.issue, 2010-12, pp. : A109-A109

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Abstract

Context. Gamma-ray bursts are usually classified in terms their high-energy emission into either short-duration or long-duration bursts, which presumably reflect two different types of progenitors. However, it has been shown on statistical grounds that a third, intermediate population is needed in this classification scheme, although an extensive study of the properties of this class has so far not been performed. The large amount of follow-up studies generated during the Swift era allows us to have a sufficient sample to attempt a study of this third population through the properties of their prompt emission and their afterglows.