Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...208.6302b&link_type=abstract
American Astronomical Society Meeting 208, #63.02; Bulletin of the American Astronomical Society, Vol. 38, p.143
Astronomy and Astrophysics
Astronomy
Scientific paper
We report the discovery of up to 35 new supernova remnants (SNRs) from a 42" resolution 90cm multi-configuration Very Large Array survey of the Galactic plane covering 4.5 deg < l < 22.0 deg and |b| < 1.25 deg. Archival 20cm, 11cm, and 8 micron data have also been used to identify the SNRs and constrain their properties. The 90cm image is sensitive to SNRs with diameters 2.5' to 50' and down to a surface brightness limit of 10-21 W m-2 Hz-1 sr-1. This survey has nearly tripled the number of SNRs known in this part of the Galaxy, and represents an overall 15% increase in the total number of Galactic SNRs. These results suggest that further deep low frequency surveys of the inner Galaxy will solve the discrepancy between the expected number of Galactic SNRs and the significantly smaller number of currently known SNRs.The National Radio Astronomy Observatory operates the Very Large Array and is a facility of the National Science Foundation operated under a cooperative agreement by Associated Universities, Inc. Basic research in radio astronomy at the NRL is supported by the Office of Naval Research.
Brogan Crystal
Gaensler Bryan
Gelfand Joseph
Kassim Namir
Lazio T.
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