ST ScI Preprint #1359b
Study of radio supernovae over the past 18 years includes two dozen detected objects and almost 80 upper limits. From this work we are able to identify classes of radio properties, demonstrate conformance to and deviations from existing models, estimate the density and structure of the circumstellar material, and by inference the evolution of the presupernova stellar wind, and reveal the last stges of stellar evolution before explosion. It may also be possible to detect hydrogen of the circumstellar material. More speculatively, it may be possible to provide distance estimates to radio supernovae.
1) Space Telescope Science Institute, 3700 San Martin Drive,
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2) On assignment from the Astrophysics Division, Space Science Department of ESA
3) NRL, Code 7214, Washington, DC 20375-5320
4) NRL, Code 7212, Washington, DC 20375-5320
5) P.O. Box 0, NRAO, Socorro, NM 87801
6) IPAC/Caltech, Mail Code 100-22, Pasadena, CA 91125