Low frequency radio and X-ray properties of core-collapse supernovae

Abstract

Radio and X-ray studies of young supernovae probe the interaction between the supernova shock waves and the surrounding medium and give clues to the nature and past of the progenitor star. Here we discuss the early emission from type Ic SN 2002ap and argue that repeated Compton boosting of optical photons by hot electrons presents the most natural explanation of the prompt X-ray emission. We describe the radio spectrum of another type Ic SN 2003dh (GRB030329) obtained with combined GMRT and VLA data. We report on the low frequency radio monitoring of SN 1995N and our objectives of distinguishing between competing models of X-ray emission from this SN and the nature of its progenitor by X-ray spectroscopy. Radio studies on SN 2001gd, SN 2001ig and SN 2002hh are mentioned.

arXiv comment5 pages, 4 figures. Uses svmult.cls. To appear in proceedings of IAU Colloquium 192 "Supernovae (10 years of SN 1993J)", April 2003, Valencia, Spain, eds. J. M. Marcaide and K. W. Weiler

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• X-ray, Optical, and Radio Observations of the Type II Supernovae 1999em and 1998S
• The Radio Evolution of the Ordinary Type Ic SN 2002ap
• The X-ray Spectrum and Light Curve of Supernova 1995N
• XMM-Newton observation of SN1993J in M81
• The nature of the prompt X-ray and radio emission from SN2002ap