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X-raying the evolution of SN 1987A

Published online by Cambridge University Press:  17 October 2017

Vinay L. Kashyap ,
David van Dyk ,
Katy McKeough ,
Frank Primini ,
Diab Jerius ,
Akshay Gowrishankar ,
Aneta Siemiginowska  and
Andreas Zezas
Vinay L. Kashyap
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge MA 02138, USA email: vkashyap@cfa.harvard.edu
David van Dyk
Affiliation:
Dept. of Statistics, Imperial University, London, UK
Katy McKeough
Affiliation:
Dept. of Statistics, Harvard University, Cambridge MA, USA
Frank Primini
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge MA 02138, USA
Diab Jerius
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge MA 02138, USA
Akshay Gowrishankar
Affiliation:
Acton-Boxborough Regional High, Acton MA, USA
Aneta Siemiginowska
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge MA 02138, USA
Andreas Zezas
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge MA 02138, USA Dept. of Physics, University of Crete, Heraklion, Greece
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Abstract

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SN 1987A has been observed with the Chandra X-ray Observatory over the entire course of the mission. We have re-analyzed the archival data by constructing an empirical point spread function and reconstructing high-resolution images using a Bayesian multi-scale image reconstruction algorithm. We are able to resolve structure in the equatorial ring of SN 1987A with unprecedented detail, at scales of $\approx \frac{1}{4}$ arcsec. We describe how the point spread function is constructed, and the reconstruction method, and explore the evolution of the inner ring at different epochs and passbands.

Keywords

supernova remnantssupernovae: individual (SN 1987A)circumstellar mattermethods: data analysismethods: statisticaltechniques: image processingX-rays: general
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. 284 - 289
Copyright
Copyright © International Astronomical Union 2017 

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