Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jrasc..99r.137f&link_type=abstract
Journal of the Royal Astronomical Society of Canada, Vol. 99, No. 4, p.137
Astronomy and Astrophysics
Astrophysics
Scientific paper
As the most significant source of chemical enrichment, energy input, and cosmic ray production in the interstellar medium, supernovae play an important role in the evolution of our Galaxy. Detailed understanding of the properties of Galactic supernova remnants (SNRs) -- sizes, energies, statistics, etc. -- are thus of great importance in astrophysics. High-resolution (~1') wide-field images of all major constituents of the Galactic ISM are now available in the Canadian Galactic Plane Survey (CGPS). We present a review of SNR properties based on data from the CGPS. We have included 36 SNRs, located in the Galactic plane between 65° and 170° of Galactic Longitude. The spectral-index distribution peaks as expected at a = -0.5, typical for mature adiabatically expanding shell-type SNRs. Newly determined distances and systemic velocities indicate that all of the SNRs are located in the spiral arms. Unlike in the recent published literature we do not find a clear correlation between radio surface brightness and diameter of the SNRs (S-D relation). Additionally we found that for most SNRs the peak polarization observed at 1420 MHz falls sharply for foreground dispersion measures DM greater than ~25 pc cm-3 or distances larger than about 2.5 kpc, indicating a relation between beam depolarization and foreground electron density.
Fedotov Konstantin
Foster Tyler J.
Kothes Roland
No associations
LandOfFree
Fundamental Properties of SNRs in the CGPS does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Fundamental Properties of SNRs in the CGPS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fundamental Properties of SNRs in the CGPS will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-856623