A Deep Chandra Imaging of Supernova Remnant Sgr A East in the Galactic Center

Details A Deep Chandra Imaging of Supernova Remnant Sgr A East in the Galactic Center A Deep Chandra Imaging of Supernova Remnant Sgr A East in the Galactic Center

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004head....8.2405p&link_type=abstract

American Astronomical Society, HEAD meeting #8, #24.05; Bulletin of the American Astronomical Society, Vol. 36, p.949

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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.

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