Supernovae in Three-Dimension: A Link to Gamma-Ray Bursts

TL;DR

This paper demonstrates that a jet-driven supernova model can accurately reproduce optical observations of SN 1998bw, linking supernovae to gamma-ray bursts and highlighting the importance of asymmetry and viewing angle effects.

Contribution

It introduces a detailed three-dimensional jet-driven supernova model that better explains observations than spherical models, connecting supernovae with gamma-ray bursts.

Findings

Jet model reproduces optical features of SN 1998bw

Viewing angle reduces estimated kinetic energy of ejecta

Jet-driven supernovae have higher energies than canonical supernovae

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 x 10^{52} erg as compared to that obtained by the previous spherical model (~ 5 x 10^{52} erg), but this is still much larger than that of a canonical SN (~10^{51} erg).