NON-THERMAL PHOTON PRODUCTION VIA BULK COMPTONIZATION AT SUPERNOVA SHOCK BREAKOUT
- Research Center for the Early Universe, School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033 (Japan)
We investigate the role of the bulk comptonization process in the propagation of thermal photons emitted at the shock breakout of a supernova explosion. We use a hydrodynamical model based on a self-similar solution for the shock breakout. The propagation of photons is treated by a Monte Carlo technique. Results of the simulations successfully reproduce the power-law spectrum observed by X-ray observations for XRF 080109/SN 2008D, if a mildly relativistic shock velocity is assumed. Effects of some radiative processes, photoionization, radiative recombination, and free-free absorption on the propagation of emitted photons are also investigated. It is found that any of them hardly changes the spectrum regarding the progenitor stars of Type Ib or Ic supernovae. Light curves calculated under the assumption of a spherical explosion indicate that the progenitor radius is required to be {approx}10{sup 13} cm.
- OSTI ID:
- 21454969
- Journal Information:
- Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 1 Vol. 719; ISSN ASJOAB; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BINARY STARS
BOSONS
CALCULATION METHODS
CHEMICAL ANALYSIS
COSMIC RADIATION
COSMIC RAY SOURCES
COSMIC X-RAY BURSTS
COSMIC X-RAY SOURCES
ELEMENTARY PARTICLES
ERUPTIVE VARIABLE STARS
IONIZATION
IONIZING RADIATIONS
MASSLESS PARTICLES
MONTE CARLO METHOD
NONDESTRUCTIVE ANALYSIS
PHOTOIONIZATION
PHOTONS
PRIMARY COSMIC RADIATION
RADIATIONS
RECOMBINATION
STARS
SUPERNOVAE
THERMAL SHOCK
VARIABLE STARS
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS