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Title:
High-energy Emission from Supernovae and Remnants
Authors:
Chevalier, R. A.
Affiliation:
AA(Department of Astronomy, University of Virginia, P.O. Box 3818, Charlottesville, VA 22903, U.S.A.)
Publication:
Highly Energetic Physical Processes and Mechanisms for Emission from Astrophysical Plasmas, Proceedings of IAU Symposium #195, held at Montana State University -- Bozeman, 6-10 July 1999. Published by Astronomical Society of the Pacific, San Francisco, p. 135.
Publication Date:
05/2000
Origin:
AUTHOR
Bibliographic Code:
2000IAUS..195..135C

Abstract

An early burst of energetic radiation is expected from a supernova at the time of shock breakout. This emission has not been directly observed but has been inferred from the photoionization around SN 1987A. X-ray emission has been detected from core-collapse supernovae in the days to years after the explosion as they interact with their circumstellar winds. Young Galactic supernova remnants provide the possibility of determining the composition structure of the ejecta through X-ray spectroscopy. An exciting finding for older remnants is that a number of remnants that appear to be interacting with molecular gas may be sources of high-energy gamma-ray emission. The clumpy structure of molecular clouds has implications for the structure expected in high-energy emission. Finally, the field of gamma-ray--line spectroscopy is beginning to yield results relevant to the explosive nucleosynthesis of radionuclides in supernovae.

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