XMM-Newton observation of SN1993J in M81

Abstract

In April 2001 SN1993J was observed with both the PN and MOS cameras of the XMM-Newton observatory, resulting in about 7. x 10^4 s of acceptable observation time. Fit results with both the PN and MOS2 camera spectra studying different spectral models are presented. The spectra are best fitted in the energy range between 0.3 and 11 keV by a 2-component thermal model with temperatures of kT_1 = 0.34+-0.04 keV and kT_2 = 6.54+-4 keV, adopting ionization equilibrium. A fit with a shock model also provides acceptable results. Combining the XMM-Newton data with former X-ray observations of the supernova, we discuss the general trend of L_x propto t^{-0.30} and the bump of the X-ray light curve as well as former and recent spectral results in the light of the standard SN model as first proposed by Chevalier in 1982.

arXiv comment7 pages, 3 figures

References in corpus (4)

• Detailed Analysis of Early to Late-Time Spectra of Supernova 1993J
• Chandra X-ray Observations of the Spiral Galaxy M81
• SN1993J VLBI (I): The Center of the Explosion and a Limit on Anisotropic Expansion
• X-Ray Detection of a Pre-Supernova Evolution for the SN 1993J Progenitor

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