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Relativistic and Newtonian Shock Breakouts

Published online by Cambridge University Press:  05 September 2012

Ehud Nakar
Ehud Nakar*
Affiliation:
Raymond and Beverly Sackler School of Physics & Astronomy, Tel Aviv University, Tel Aviv 69978, Israel
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Abstract

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Observations of the first light from a stellar explosion can open a window to a wealth of information on the progenitor system and the explosion itself. Here I briefly discuss the theoretical expectation of that emission, comparing Newtonian and relativistic breakouts. The former takes place in regular core-collapse supernovae (SNe) while the latter is expected in SNe that are associated with gamma-ray bursts (GRBs), extremely energetic SNe (e.g., SN2007bi) and white dwarf explosions (e.g., type Ia and .Ia SNe, accretion induced collapse). I present the characteristic observable signatures of both types of breakouts, when spherical. Finally, I discuss Newtonian shock breakouts through wind, which produce a very luminous signal, with an X-ray component that is weak around the breakout, and becomes brighter afterwards.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S279: Death of Massive Stars: Supernovae and Gamma-Ray Bursts , April 2011 , pp. 282 - 284
Copyright
Copyright © International Astronomical Union 2012

References

Nakar, E. & Sari, R. 2010, ApJ, 725, 904CrossRefGoogle Scholar
Nakar, E. & Sari, R. 2012, ApJ, 747, 88Google Scholar
Svirski, G., Nakar, E., & Sari, R. 2012, arXiv:1202.3437Google Scholar