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astro-ph2003
A Radio Survey of Type Ib and Ic Supernovae: Searching for Engine Driven Supernovae
E. Berger, S. R. Kulkarni, D. A. Frail +1
The association of gamma-ray bursts (GRBs) and core-collapse supernovae (SNe) of Type Ib and Ic was motivated by the detection of SN 1998bw in the error box of GRB 980425 and the n…
astro-ph2003
A Radio Flare from GRB 020405: Evidence for a Uniform Medium Around a Massive Stellar Progenitor
E. Berger, A. M. Soderberg, D. A. Frail +1
We present radio observations of GRB 020405 starting 1.2 days after the burst, which reveal a rapidly-fading ``radio flare''. Based on its temporal and spectral properties, we inte…