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The Radio Remnant of Supernova 1987A − A Broader View

Published online by Cambridge University Press:  17 October 2017

G. Zanardo ,
L. Staveley-Smith ,
C. -Y. Ng ,
R. Indebetouw ,
M. Matsuura ,
B. M. Gaensler  and
A. K. Tzioumis
G. Zanardo
Affiliation:
International Centre for Radio Astronomy Research (ICRAR), M468, The University of Western Australia, Crawley, WA 6009, Australia. email: [email protected]
L. Staveley-Smith
Affiliation:
International Centre for Radio Astronomy Research (ICRAR), M468, The University of Western Australia, Crawley, WA 6009, Australia. email: [email protected] Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO)
C. -Y. Ng
Affiliation:
Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong
R. Indebetouw
Affiliation:
Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904-4325, USA
M. Matsuura
Affiliation:
School of Physics and Astronomy, Cardiff University, Queens Buildings, The Parade, Cardiff, CF24 3AA, UK Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, UK
B. M. Gaensler
Affiliation:
Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO) CSIRO Astronomy and Space Science, Australia Telescope National Facility, PO Box 76, Epping, NSW 1710, Australia
A. K. Tzioumis
Affiliation:
Dunlap Institute for Astronomy & Astrophysics, University of Toronto, Toronto, ON M5S 3H4, Canada
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Abstract

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Supernova remnants (SNRs) are powerful particle accelerators. As a supernova (SN) blast wave propagates through the circumstellar medium (CSM), electrons and protons scatter across the shock and gain energy by entrapment in the magnetic field. The accelerated particles generate further magnetic field fluctuations and local amplification, leading to cosmic ray production. The wealth of data from Supernova 1987A is providing a template of the SN-CSM interaction, and an important guide to the radio detection and identification of core-collapse SNe based on their spectral properties. Thirty years after the explosion, radio observations of SNR 1987A span from 70 MHz to 700 GHz. We review extensive observing campaigns with the Australia Telescope Compact Array (ATCA) and the Atacama Large Millimeter/submillimeter Array (ALMA), and follow-ups with other radio telescopes. Observations across the radio spectrum indicate rapid changes in the remnant morphology, while current ATCA and ALMA observations show that the SNR has entered a new evolutionary phase.

Keywords

circumstellar matterISM: supernova remnantsradio continuum: generalsupernovae: individual (SN 1987A)acceleration of particlesradiation mechanisms: nonthermal
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S331: Supernova 1987A:30 years later - Cosmic Rays and Nuclei from Supernovae and their aftermaths , February 2017 , pp. 274 - 283
Copyright
Copyright © International Astronomical Union 2017 

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