The Supernova Remnant G93.3+6.9: A "Foil" for Cassiopeia A?
Abstract
Several of the best known supernova remnants, including Cassiopeia A, have spectra dominated by thermal emission. These remnants also display a prominent forward shock in X-ray imaging, radiation from non-thermal electrons accelerated in the shock. However, in some remnants, little or no emission is observed at the forward shock, and the interior emission could be characterized as diffuse, patchy, thermal emission. This is hypothesized to be a consequence of exploding in a low density environment, perhaps in a superbubble or a hot interstellar medium. G93.3+6.9 is one such remnant. We present a new image created with a mosaic of five pointing of the Suzaku X-Ray Telescope, and analysis of the Suzaku XIS CCD spectra of the remnant to determine the age and apparent expansion phase of the remnant, and the supernova type. Since far more remnants may be expanding in low density than in high density environments, understanding G93.3+6.9 is important for understanding the impact of supernovae on the evolution of the Galaxy.
- Publication:
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American Astronomical Society Meeting Abstracts
- Pub Date:
- December 2007
- Bibcode:
- 2007AAS...21111503S