Fe-rich and Si-rich ejecta distribution in the Cygnus Loop
Abstract
We report on the results of Suzaku observations of central region of the proto-typical middle-aged Supernova remnant (SNR) Cygnus Loop. The southeastern region of the SNR with the distance from the geometric center ranging from 10' to 55' is observed using XIS. Thanks to the low and stable background of Suzaku, the distribution maps of heavy species such as Fe, S, Si, Mg, Ne and O arereliably obtained. We found that the relatively heavier four species are confined to the small centermost region while the lighter species show uniform distribution or depressed center region. These results exhibit an onion-like metallicity structure in this SNR, which reflects the metal distribution of the progenitor.
- Publication:
-
Suzaku 2011: Exploring the X-ray Universe: Suzaku and Beyond
- Pub Date:
- March 2012
- DOI:
- 10.1063/1.3696198
- Bibcode:
- 2012AIPC.1427..269N