Needs for a new GRB classification following the fireshell model: "genuine short", "disguised short" and "long" GRBs

C.L. BIANCO; M.G. BERNARDINI; L. CAITO; G. DE BARROS; L. IZZO; M. MUCCINO; B. PATRICELLI; A.V. PENACCHIONI; G. B. PISANI; R. RUFFINI

Munich

Conferencia; Gamma-Ray Bursts 2012 Conference; 2012

Thanks to the observations by the Swift and Fermi satellites, it became clear that the traditional classification of GRBs in two classes (?short/hard? and ?long/soft?) is, at best, misleading. Fol- lowing the theoretical approach of the fireshell model, we discuss a new GRB classification based on intrinsic physical properties which includes at least three classes: ?genuine short?, ?disguised short? and ?long?, whose names resembles the traditional ones just for simplicity. Observational facts supporting this classification are presented, including the implications for the ?Ep,i?Eiso? correlation.