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GRB 980425, SN1998BW and the EMBH model |
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| Authors: | R Ruffini MG Bernardini CL Bianco P Chardonnet F Fraschetti S-S Xue |
| Institution: | aICRA – International Centre for Relativistic Astrophysics and Dipartimento di Fisica, Universitá, di Roma “La Sapienza”, Piazzale Aldo Moro 5, I-00185 Rome, Italy bUniversité de Savoie, LAPTH – LAPP, BP 110, F-74941 Annecy-le-Vieux Cedex, France cUniversitá di Trento, Via Sommarive 14, I-38050 Povo (Trento), Italy |
| Abstract: | The EMBH model, previously developed using GRB 991216 as a prototype, is here applied to GRB 980425. We fit the luminosity observed in the 40–700 keV, 2–26 keV and 2–10 keV bands by the BeppoSAX satellite. In addition we present a novel scenario in which the supernova SN1998bw is the outcome of an “induced gravitational collapse” triggered by GRB 980425, in agreement with the GRB-Supernova Time Sequence (GSTS) paradigm Ruffini, R., Bianco, C.L., Chardonnet, P., Fraschetti, F., Xue, S.-S. On a possible GRB-supernova time sequence. Astrophys. J. 555, L117–L120, 2001c]. A further outcome of this astrophysically exceptional sequence of events is the formation of a young neutron star generated by the SN1998bw event. A coordinated observational activity is recommended to further enlighten the underlying scenario of this most unique astrophysical system. |
| Keywords: | γ-ray bursts EMBH model GRB 980425 SN1998BW |
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