Radio Studies of Young Core Collapse Supernovae

Details Radio Studies of Young Core Collapse Supernovae Radio Studies of Young Core Collapse Supernovae

2002-05-16

arxiv.org/abs/astro-ph/0205265v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 .ps figs, 2 tables: uses basi.sty (enclosed). Presented at the ASI meeting at Pune Feb 5-8, 2002; Bulletin of Astro

Scientific paper

Multi-frequency observations of two radio bright SNe (SN1993J, SN1979C) carried out over a year with GMRT are presented. Their radio light curves trace the evolution of the mass loss in the stellar wind before the pre-supernova star exploded. Their spectra at low frequencies distinguish between the synchrotron self-absorption and free-free absorption based models. Two very similar type IIp SN1999gi and SN1999em were also observed and we comment on their progenitor mass. These observations of different subclasses of core-collapse supernovae will aid in defining their progenitors.

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