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SN 1998bw: The case for a relativistic shock

Wieringa, M. H. and Kulkarni, S. R. and Frail, D. A. (1999) SN 1998bw: The case for a relativistic shock. Astronomy and Astrophysics Supplement Series, 138 (3). pp. 467-468. ISSN 0365-0138. doi:10.1051/aas:1999312.

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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. It is quite plausible that this shock may produce high energy emission (at early times and by inverse Compton scattering). As with other supernovae, we expect radio emission at much later times powered primarily by the slow moving ejecta. This expectation has motivated us to continue monitoring this unusual SN.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Kulkarni, S. R.0000-0001-5390-8563
Additional Information:© 1999 European Southern Observatory (ESO). Received: 21 January 1999. Accepted: 9 June 1999. The Australia Telescope is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO.
Group:UNSPECIFIED, Division of Geological and Planetary Sciences
Funding AgencyGrant Number
Commonwealth of AustraliaUNSPECIFIED
Subject Keywords:gamma-ray: bursts
Issue or Number:3
Record Number:CaltechAUTHORS:20180209-083600939
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Official Citation:SN 1998bw: The case for a relativistic shock M. H. Wieringa, S. R. Kulkarni and D. A. Frail Astron. Astrophys. Suppl. Ser., 138 3 (1999) 467-468 DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84756
Deposited By: Ruth Sustaita
Deposited On:13 Feb 2018 21:26
Last Modified:15 Nov 2021 20:22

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