Constraining the Continued Rise of SN1996cr

Details Constraining the Continued Rise of SN1996cr Constraining the Continued Rise of SN1996cr

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007cxo..prop.2407b&link_type=abstract

Chandra Proposal ID #09500845

Computer Science

Chandra Proposal Id #09500845

Scientific paper

Recently confirmed SN 1996cr ranks among the closest and X-ray brightest supernovae (SNe) detected on the sky. Past X-ray observations of 1996cr have shown it to have a unique spectral evolution compared to typical type-II SNe, wherein the X-ray flux is still increasing 10 years post-explosion (akin to 1987A). This rising emission is attributed to the ejecta propagating through increasingly dense circumstellar material (e.g., wind) leftover from the past evolution of the supergiant progenitor. We propose an ACIS-S observation of 1996cr to monitor the evolving X-ray spectrum of this unique object and trace back its evolutionary history.

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