Tracking the X-ray Evolution of the Enigmatic SN1996cr

Details Tracking the X-ray Evolution of the Enigmatic SN1996cr Tracking the X-ray Evolution of the Enigmatic SN1996cr

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cxo..prop.2751b&link_type=abstract

Chandra proposal ID #11500846

Computer Science

Scientific paper

SN1996cr is one of the five closest SNe to explode in the past 3 decades, yet lay hidden for many years. Its unique temporal evolution suggests that it exploded into a compact wind-blown bubble or shell, similar to SN1987A but >1000x more luminous. Recent observations now show a 20% decline, implying that the shock may have finally overtaken the shell. The nature of this new decline has important implications for the CSM created during the last 100-10,000 yrs by the progenitor, an epoch traditionally difficult to probe in massive stars. Along with ongoing ATCA and VLBA radio monitoring, an accurate well-sampled X-ray light curve is vital for setting strong constraints on the structure of the nebula established by progenitor winds and, by extension, the evolution of the progenitor itself.

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