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S. Park (Penn State), Y. Maeda (ISAS), M. P. Muno (UCLA), F. K. Baganoff (MIT), M. Morris (UCLA), D. N. Burrows, D. Sanwal, G. Chartas, G. P. Garmire (Penn State)
We present imaging and spectral studies of the supernova remnant (SNR) Sgr A East, as observed with deep Chandra/ACIS observations of the Galactic center. We confirm the previously reported Fe abundance enhancement near the center of the SNR. X-ray emission from the Fe-rich central region suggests the presence of multi-temperature components of hot plasma as well as Fe overabundance (a few times solar). We draw attention to a hard pointlike source (CXOGC J174545.5-285829) lying at the northern edge of Sgr A East, just within the radio shell boundary. Based on morphological, spectral, and temporal characteristics, we propose that this hard X-ray source, which also has a pointlike radio counterpart, might be a high-velocity neutron star associated with the SNR. Follow-up observations searching for pulsation from this neutron star candidate would be warranted.
The author(s) of this abstract have provided an email address for comments about the abstract: park@astro.psu.edu
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Bulletin of the American Astronomical Society, 36 #3
© 2004. The American Astronomical Soceity.