A Search for Chandra-Detected Counterparts to Optically-Identified Supernova Remnants and Candidate Radio Supernova Remnants in Nearby Spiral Galaxies

Details A Search for Chandra-Detected Counterparts to Optically-Identified Supernova Remnants and Candidate Radio Supernova Remnants in Nearby Spiral Galaxies A Search for Chandra-Detected Counterparts to Optically-Identified Supernova Remnants and Candidate Radio Supernova Remnants in Nearby Spiral Galaxies

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.1510p&link_type=abstract

American Astronomical Society Meeting 210, #15.10; Bulletin of the American Astronomical Society, Vol. 39, p.114

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of a search for Chandra-detected counterparts to optically-identified and candidate radio supernova remnants (SNRs) in nearby galaxies. The unsurpassed angular resolution of the Chandra X-ray Observatory (approximately one arcsecond) has proven to be essential for the identification of X-ray counterparts to SNRs located in regions of high confusion in external galaxies. We will present comparisons of the properties of SNRs with and without Chandra-detected counterparts. In the case of the optically-identified SNRs with and without Chandra-detected counterparts, we will compare such properties as line ratios and diameters. Likewise, in the case of candidate radio SNRs with and without Chandra-detected counterparts, we will compare such properties as radio luminosities and spectral indices. We will also identify SNRs with Chandra-detected counterparts which are either time-variable or which feature harder spectra which are more consistent with X-ray binaries than SNRs. Initial results and preliminary conclusions will be presented and discussed.

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