The Evolved Yet Oxygen-Rich SNR CTB 1:SN Ejecta Clumping and Hard X-ray Emission

Details The Evolved Yet Oxygen-Rich SNR CTB 1:SN Ejecta Clumping and Hard X-ray Emission The Evolved Yet Oxygen-Rich SNR CTB 1:SN Ejecta Clumping and Hard X-ray Emission

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..132r&link_type=abstract

XMM-Newton Proposal ID #04033901

Computer Science

Supernovae, Supernova Remnants, Diffuse (Galactic) Emission And Isolated Neutron Stars, Ctb1Sw, Xmm-Newton Proposal 04033901

Scientific paper

Based on prior ROSAT observations, the supernova remnant (SNR) CTB 1 features X-ray center-filled emission within a well-defined radio shell, characteristic of ``mixed-morphology" SNRs. Our ASCA and Chandra observations revealed that CTB 1 is an oxygen-rich SNR with enhanced abundances of O and Ne despite its evolved state. We also found a hard component to the X-ray emission, and our Chandra images suggest that the hard emission may be localized. Our scientific goals are i) to examine clumping structures of SN ejecta, where the ejecta are still dominant at an old age, ii) to determine if the hard emission has a non-thermal origin and is truly localized, and iii) to resolve the hard point-like source and determine if it is a pulsar-wind nebula associated with CTB 1.

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