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Aspherical Supernovae and Oblique Shock Breakout

Published online by Cambridge University Press:  17 October 2017

Niloufar Afsariardchi  and
Christopher D. Matzner
Niloufar Afsariardchi
Affiliation:
Department of Astronomy and Astrophysics, University of Toronto, 50 St. George St, M5S 3H4, Toronto, Canada email: afsariardchi@astro.utoronto.ca email: matzner@astro.utoronto.ca
Christopher D. Matzner
Affiliation:
Department of Astronomy and Astrophysics, University of Toronto, 50 St. George St, M5S 3H4, Toronto, Canada email: afsariardchi@astro.utoronto.ca email: matzner@astro.utoronto.ca
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Abstract

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In an aspherical supernova explosion, shock emergence is not simultaneous and non-radial flows develop near the stellar surface. Oblique shock breakouts tend to be easily developed in compact progenitors like stripped-envelop core collapse supernovae. According to Matzner et al. (2013), non-spherical explosions develop non-radial flows that alters the observable emission and radiation of a supernova explosion. These flows can limit ejecta speed, change the distribution of matter and heat of the ejecta, suppress the breakout flash, and most importantly engender collisions outside the star. We construct a global numerical FLASH hydrodynamic simulation in a two dimensional spherical coordinate, focusing on the non-relativistic, adiabatic limit in a polytropic envelope to see how these fundamental differences affect the early light curve of core-collapse SNe.

Keywords

supernovae: generalhydrodynamicsshock waves
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. 96 - 100
Copyright
Copyright © International Astronomical Union 2017 

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