SN2002ic and its Circumstellar Medium

Details SN2002ic and its Circumstellar Medium SN2002ic and its Circumstellar Medium

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cxo..prop.1365h&link_type=abstract

Chandra Proposal ID #04508152

Mathematics

Logic

Chandra Proposal Id #04508152

Scientific paper

Supernova (SN) 2002ic (IAUC 8019) is the first thermonuclear or Type Ia SN ever to show hydrogen in its spectrum (IAUC 8151). Hamuy et al (astro-ph/0306270) argue that the H alpha emission of the SN arises from a dense circumstellar medium (CSM), which itself was the result of pre-SN mass loss from a massive asymptotic giant branch star that was the companion to the white dwarf that exploded as the SN. This result could have wide implications for the origin of SNe Ia and their cosmological use. This study is based on observations taken between November and February; our more recent VLT data from July continue to show strong H alpha emission. Radio emission has not been detected (IAUC 8157), which can be explained if there is substantial free-free absorption in the CSM gas. Hard X-ray observations are the most sensitive probe of the CSM surrounding SN Ia; here we propose X-ray observations of SN2002ic to detect the shocked CSM and confirm the high mass loss rate of the progenitor.

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