Other
Scientific paper
Jun 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976stin...7628147s&link_type=abstract
Presented at Intern. and Gamma-Ray Symp. on the Struct. and Content of our Galaxy and Galactic Gamma-Ray, Greenbelt, Md., 2-4 Ju
Other
Cosmic Rays, Galactic Structure, Gamma Rays, Milky Way Galaxy, Bremsstrahlung, Compton Effect, Decay, Interstellar Gas, Pions, Pulsars, Sas-2, Supernova Remnants, Synchrotron Radiation
Scientific paper
The relation of SAS-2 observations of galactic gamma-rays to the large scale distribution of cosmic rays and interstellar gas in the galaxy is reviewed. Starting with a discussion of production rates, the case for pion decay being the predominant production mechanism in the galactic disk above 100 MeV is reestablished, and it is also pointed out that Compton gamma-rays can be a significant source near l = 0. The concepts of four distinct galactic regions are defined, viz. the nebulodisk, ectodisk, radiodisk and exodisk. Bremsstrahlung and pion decay gamma-rays are associated with the first two (primarily the first) regions, and Compton gamma-rays and synchrotron radiation are associated with the latter two regions. On a large scale, the cosmic rays, interstellar gas (primarily H2 clouds in the inner galaxy) and gamma-ray emissivity all peak between 5 and 6 kpc from the galactic center. This correlation is related to correlation with other population I phenomena and is discussed in terms of the density wave concept of galactic structure.
No associations
LandOfFree
Gamma-rays, cosmic rays, and galactic structure 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 Gamma-rays, cosmic rays, and galactic structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gamma-rays, cosmic rays, and galactic structure will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1785275