XMM-Newton observation of SN1993J in M81
Astrophysics, abstract
astro-ph/0304322
From: Zimmermann, Hans-Ulrich <zim@mpe.mpg.de>
Date: Thu, 17 Apr 2003 13:57:48 GMT (57kb)
XMM-Newton observation of SN1993J in M81
Authors:
H.-U. Zimmermann,
B. Aschenbach
Comments: 7 pages, 3 figures
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.
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