Radio emission from supernovae

Observations of recently exploded radio supernovae -a few years to a few tens of years- allow us to obtain valuable information about the nature and evolutionary phase of the progenitor star in the period from a few hundred to several tens-of-thousands of years before its explosion. In particular, high resolution radio observations using very-long-baseline interferometry (VLBI) are the only ones that permit to trace the presupernova mass loss history by directly imaging the structure of the supernova as it expands into the circumstellar medium.
I shall review our current knowledge of this field, emphasizing the results we have obtained with high-resolution radio observations on the "nearby" supernovae 1993J, 1979C, and 1986J.

 

Fecha: 
11/06/2003 - 14:00
Conferenciante: 
Miguel Ángel Pérez Torres
Filiación: 
Instituto de Astrofísica de Andalucía - CSIC


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