X-ray synchrotron in the forward shock of Cassiopeia A

Details X-ray synchrotron in the forward shock of Cassiopeia A X-ray synchrotron in the forward shock of Cassiopeia A

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..565..399b&link_type=abstract

YOUNG SUPERNOVA REMNANTS: Eleventh Astrophysics Conference. AIP Conference Proceedings, Volume 565, pp. 399-402 (2001).

Astronomy and Astrophysics

Astrophysics

Supernova Remnants, Cosmic Rays, X-Ray Sources, X-Ray Bursts

Scientific paper

We present high spatial resolution spectra of the forward shock of Cassiopeia A from a 50 ks observation obtained by the Advanced CCD Imaging Spectrometer on board the Chandra X-ray Observatory. We systematically compare the spectra of several regions of the forward shock and find that single-component non-equilibrium ionization models do not provide good fits to the spectra. Our preliminary results indicate that it is necessary to add a nonthermal, synchrotron component that dominates the continuum of the spectrum above 3 keV. We find that the shape of this nonthermal continuum changes from region to region which may indicate variable acceleration conditions within the remnant. .

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