The distribution of -ray emissivity in the Galaxy
- 1 May 1976
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 9 (5), 823-827
- https://doi.org/10.1088/0305-4470/9/5/016
Abstract
The longitude distribution of gamma -ray intensity measured with the SAS-2 satellite has been unfolded to give the Calactic gamma -ray emissivity. It is found that the observations are consistent with either a cylindrically symmetric emissivity distribution, or a distribution uniform along spirals with tilt angles similar to those for spiral arms. The gamma -ray distribution in the Galaxy seems to be more in accord with models based on the molecular hydrogen distribution than those based on spiral structure.Keywords
This publication has 8 references indexed in Scilit:
- Origin of Cosmic RaysPhysical Review Letters, 1975
- High-energy galactic gamma radiation from cosmic rays concentrated in spiral armsThe Astrophysical Journal, 1975
- Molecular clouds in the GalaxyThe Astrophysical Journal, 1975
- High-energy gamma-ray results from the second small astronomy satelliteThe Astrophysical Journal, 1975
- An assessment of models for the γ-ray flux from the Galactic planeJournal of Physics A: General Physics, 1975
- Derivation of γ-ray emissivity in the Galaxy from satellite dataJournal of Physics A: General Physics, 1975
- Relevance of cosmic gamma-rays to origin of the cosmic radiationNature, 1974
- The Distribution of Cosmic Rays in the Galaxy and Their Dynamics as Deduced from Recent V-Ray ObservationsThe Astrophysical Journal, 1974