Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-04-17
Astron.Astrophys. 406 (2003) 969-974
Astronomy and Astrophysics
Astrophysics
7 pages, 3 figures
Scientific paper
10.1051/0004-6361:20030687
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.
Aschenbach Bernd
Zimmermann Hans-Ulrich
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