Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.289..283s&link_type=abstract
Astrophysics and Space Science, v. 289, Issue 3, p. 283-286 (2004).
Astronomy and Astrophysics
Astrophysics
3
X-Rays: Galaxies, Ism: Supernova Remnants, Cosmic Rays
Scientific paper
Since supernova remnants (SNRs) are believed to be the primary sources of Galactic cosmic rays (CRs), their distribution in galaxies is an important basis for modelling and understanding the distribution of the CRs and their γ-ray spectrum. We analysed the radial surface density of X-ray and radio selected SNRs in the Large Magellanic Cloud (LMC) and M 33. Both in X-rays and in radio, the surface densities of the SNRs are in excellent agreement in both galaxies, showing an exponential decay in radius. The results were compared to the SNR distribution in the spiral galaxies M 31 and NGC 6946 as well. The radial scale length of the distribution is frac{1} {4} -frac{1} {3} of the radius of the galaxies, fully consistent with values derived for the Milky Way, the LMC, and M 33. Therefore, not only the radio SNRs, but also the X-ray detected SNR sample can be interpreted to be representative for the CR sources within a galaxy.
Breitschwerdt Dieter
Sasaki Manami
Supper Rodrigo
No associations
LandOfFree
SNR Surface Density Distribution in Nearby Galaxies 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 SNR Surface Density Distribution in Nearby Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SNR Surface Density Distribution in Nearby Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1601831