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Properties of X-ray emission of an aspherical shock breakout

Published online by Cambridge University Press:  17 October 2017

Yukari Ohtani ,
Akihiro Suzuki ,
Toshikazu Shigeyama  and
Masaomi Tanaka
Yukari Ohtani
Affiliation:
Center for Computational Astrophysics, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan email: [email protected]
Akihiro Suzuki
Affiliation:
Yukawa Institute for Theoretical Physics, Kyoto University, Oiwake-cho, Kitashirakawa, Sakyo-ku, Kyoto, 606-8502, Japan email: [email protected]
Toshikazu Shigeyama
Affiliation:
Research Center for the Early Universe, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan email: [email protected]
Masaomi Tanaka
Affiliation:
Division of Theoretical Astronomy, National Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo 181-8588, Japan email: [email protected]
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Abstract

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We investigate the relation between the emission properties of supernova shock breakout in the circumstellar matter (CSM) and the behavior of the shock. Using a Monte-Carlo method, we examine how the light curve and spectrum depends on the asphericity of the shock and bulk-Compton scattering, and compare the results with the observed properties of X-ray outburst (XRO) 080109/SN 2008D. We found that the rise and decay time of the X-ray light curve do not significantly depend on the degree of shock asphericity and the viewing angle in a steady and spherically symmetric CSM. The observed X-light curve and spectrum of XRO 080109 can be reproduced by considering the shock with a radial velocity of 60% of the speed of light, and the wind mass loss rate is about 5 × 10−4M⊙.

Keywords

radiative transferscatteringmethods: numericalsupernovae: generalsupernovae: individual (SN 2008D)X-rays: individual (XRO 080109)
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. 51 - 56
Copyright
Copyright © International Astronomical Union 2017 

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