Abstract Observational consequences of a jet-driven supernova (SN) explosion model are presented. The results are compared in detail with optical observations of SN 1998bw associated with a Gamma-Ray Burst. It is shown that the jet model is able to reproduce virtually all the optical observations available for this SN, although a spherical model fails to explain some of observed features. Because of the viewing angle effect, the required kinetic energy of the SN ejecta is reduced to ˜ 2 × 10^{52} erg as compared to that obtained by the previous spherical model (˜ 5 × 10^{52} erg), but this is still much larger than that of a canonical SN (˜ 10^{51} erg).
Keywords supernovae: individual (SN 1998bw) gamma rays: bursts radiative transfer nuclear reactions nucleosynthesis abundances
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