SN 1998bw: The case for a relativistic shock
Jun, 19992 pages
Part of Proceedings, Workshop on Gamma-Ray Bursts in the Afterglow Era : Rome, Italy, November 3-6, 1998, 467-468
Published in:
- Astron.Astrophys.Suppl.Ser. 138 (1999) 3, 467-468
Contribution to:
- Published: Sep 1, 1999
e-Print:
- astro-ph/9906070 [astro-ph]
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Abstract: (EDP Sciences)
SN 1998bw shot to fame by claims of association with GRB 980425.Independent of its presumed association with a GRB, this SN is unusualin its radio properties. A simple interpretation of the unusuallybright radio emission leads us to the conclusion that there are twoshocks in this SN: a slow moving shock containing most of the ejectaand a relativistic shock () which is responsible for theradio emission. This is the first evidence for the existence ofrelativistic shocks in supernovae. It is quite plausible that thisshock may produce high energy emission (at early times and by inverseCompton scattering). As with other supernovae, we expect radioemission at much later times powered primarily by the slow movingejecta. This expectation has motivated us to continue monitoring thisunusual SN. Key words: gamma-ray: bursts- gamma-ray: bursts
- talk: Rome 1998/11/03
- supernova
- shock waves
- photon: cosmic radiation
- cosmic radiation: particle source
- cosmic radiation: emission
- flux: density
- plasma: energy
- experimental results
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