Chandra Observation of a Type IIN Supernova 1995N

Details Chandra Observation of a Type IIN Supernova 1995N Chandra Observation of a Type IIN Supernova 1995N

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sgrb.confe..12c&link_type=abstract

Presented at the KITP Conference: Supernova and Gamma-Ray Burst Remnants, Feb 10, 2006, Kavli Institute for Theoretical Physics,

Physics

Scientific paper

We present the spectroscopic and imaging analysis of Type IIn supernova SN1995N observed with the Chandra X-Ray Observatory on 2004 March 27. Wedetect Neon lines in the spectrum and compare our observations withprevious ASCA and ROSAT observations of the SN. We find presence of anextra absorption column depth, which indicates possiblly a cool dense shellbetween the reverse shock and the contact discontinuity in theejecta. With the higher spatial resolution and sensitivity of Chandra, weseparate out many nearby sources in the supernova field of view that hadadditionally contributed to the supernova flux in the previous ASCAobservations due to the large point-spread function of ASCA, indicatingpresence of a non-linear behaviour of the X-ray light curve. Taking outthese extra contributions, the SN light curve seems to be consistent withthe linear declining flux. We discuss results in the context of models ofnucleosynthesis and the interaction of the shock waves with thecircumstellar medium in core-collapse supernovae.

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