The broad-band X-ray spectrum of the Cas A supernova remnant as seen by the BeppoSAX observatory
F. Favata, J. Vink, D. Dal Fiume, A. N. Parmar, A. Santangelo, T. Mineo, A. Preite-Martinez, J. S. Kaastra, J. A. M. Bleeker
Abstract
We present a broad band X-ray observation of the Cas A supernova remnant, obtained with the 4 narrow field instruments on board the BeppoSAX satellite. The X-ray spectrum thus obtained spans more than two decades in energy, from ~0.5 to ~80 keV. The complete spectrum is fit with a two-component non-equilibrium ionization (NEI) model plus a power-law component which dominates at the higher energies. The influence of the hard X-ray tail on the parameters derived for the thermal emission is discussed.
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