SN 1998bw: The case for a relativistic shock

@article{Wieringa1999SN1T,
  title={SN 1998bw: The case for a relativistic shock},
  author={Mark H. Wieringa and Shrinivas R. Kulkarni and Dale A. Frail},
  journal={Astronomy \& Astrophysics Supplement Series},
  year={1999},
  volume={138},
  pages={467-468}
}
SN 1998bw shot to fame by claims of association with GRB 980425. Independent of its presumed association with a GRB, this SN is unusual in its radio properties. A simple interpretation of the unusually bright radio emission leads us to the conclusion that there are two shocks in this SN: a slow moving shock containing most of the ejecta and a relativistic shock (Γ = 2) which is responsible for the radio emission. This is the first evidence for the existence of relativistic shocks in supernovae… 

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