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Speaker

Vikram Dwarkadas

University of Chicago
Astronomy and Astrophysics
773-834-4668
vikram@oddjob.uchicago.edu
Unravelling the Progenitors of Core-Collapse Supernovae
Core-collapse supernovae (SNe) arise from the explosion of massive stars. The resultant shock wave will expand in the circumstellar medium formed by mass-loss from the massive star. The interaction of the shock wave with this medium gives rise to X-ray and radio emission. Analysis of the emission can provide significant clues to the density structure of the ambient medium. That can be used to obtain information about the mass-loss properties of the star, especially in the final 1% of the star's lifetime, and from thence about the progenitor itself. In this talk we will discuss, with specific examples, how circumstellar interaction can be used to constrain the SN progenitor, and discuss the implications for massive star mass-loss and SN evolution.
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