X-Ray Emission Due to Electron Capture Decay of ^44Ti in Supernova Remnant CasA

Details X-Ray Emission Due to Electron Capture Decay of ^44Ti in Supernova Remnant CasA X-Ray Emission Due to Electron Capture Decay of ^44Ti in Supernova Remnant CasA

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..ses.jb001t&link_type=abstract

American Physical Society, The 70th Annual Meeting of the Southeastern Section, November 6-8, 2003, Wilmington, North Carolina,

Physics

Scientific paper

The presence of radioactive ^44Ti in supernova remnants (SNRs) is predicted by current supernova nucleosynthesis models. The electron capture decay of ^44Ti should be detectable through the K X-ray emission of its daughter nuclei ^44Sc. Thus X-ray surveys of SNRs could provide a direct measurement of ^44Ti as a supernova nucleosynthesis product. Given the existing detections in the CasA SNR of gamma rays produced by the secondary decay in this decay chain, and given the wealth of existing X-ray data on CasA, it is a reasonable target for a search for ^44Ti. Here we outline the procedure and preliminary results of our search for ^44Ti in CasA using archived data from NASA's Chandra X-ray Observatory.

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