Modeling the X-ray emission of SN 1993J

Abstract

We investigate the effects of radiative shocks on the observed X-ray emission from the Type II supernova SN 1993J. To this end, the X-ray emission is modeled as a result of the interaction between the supernova ejecta and a dense circumstellar medium at an age of 8 years. The circumstances under which the reverse shock is radiative are discussed and the observed X-ray emission is analyzed using the numerical code described in Nymark et al. (2006). We argue that the original analysis of the X-ray observations suffered from the lack of self-consistent models for cooling shocks with high density and velocity, leading to questionable conclusions about the temperatures and elemental abundances. We reanalyze the spectra with our numerical model, and discuss the expected spectra for different explosion models for the progenitors. We find that the spectra of SN 1993J are compatible with a CNO-enriched composition and that the X-ray flux is dominated by the reverse shock.

12 pages, 7 figures, 3 tables. Accepted for publication in A&A

References in corpus (7)

• A Physical Relationship Between Electron-Proton Temperature Equilibration and Mach Number in Fast Collisionless Shocks
• Long Term Radio Monitoring of SN 1993J
• The Persistence of Memory, or How the X-Ray Spectrum of SNR 0509-67.5 Reveals the Brightness of its Parent Type Ia Supernova
• SN 1993J VLBI (IV): A Geometric Determination of the Distance to M81 with the Expanding Shock Front Method
• Chandra LETG Observations of Supernova Remnant 1987A
• Modeling the X-ray emission of SN 1993J
• Coronal emission from the shocked circumstellar ring of SN 1987A

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• The Exceptional X-ray Evolution of SN1996cr in High Resolution
• Analysis of 14 Years of X-Ray Emission From SN 2011DH