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Session 12 - Degenerate Stars & Supernovae.
Oral session, Monday, June 09
North Main Hall C/D,

[12.05] Plasma Turbulence and Radio Emission from Supernova 1993J

W. K. Rose (Univ. of Maryland)

The initial spectrum of Supernova 1993J, which exploded in the nearby spiral M81, contained hydrogen lines and therefore was classified as a type II supernova. However, subsequent disappearance of hydrogen lines and appearance of helium lines made it similar to a type Ib supernova. Radio emission was detected from SN 1993J shortly after the first peak in optical brightness. In this paper we present a model for the observed radio radiation that involves the interaction of a collisionless shock front generated by the supernova ejecta and a stellar wind produced by the progenitor supergiant.

Program listing for Monday