The structure of the galactic disk and its implications for gamma-ray astronomy

Details The structure of the galactic disk and its implications for gamma-ray astronomy The structure of the galactic disk and its implications for gamma-ray astronomy

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...206..589f&link_type=abstract

Astrophysical Journal, vol. 206, June 1, 1976, pt. 1, p. 589-598. Deutsche Forschungsgemeinschaft

Astronomy and Astrophysics

Astrophysics

22

Galactic Structure, Gamma Rays, Gas Density, Hydrogen Atoms, Interstellar Gas, Sas-2, Cosmic Rays, Density Distribution, Interstellar Magnetic Fields, Milky Way Galaxy, Molecular Gases, Radial Distribution, Satellite Observation, Spatial Distribution

Scientific paper

Under the assumption of a static equilibrium existing between the various constituents of our galaxy we derive analytic formulae for the stratification of the stars and for the ionized and molecular interstellar gas perpendicular to the galactic plane. Results are compared with observational data and previous theoretical work by Kellman (1972). Predictions are made for the distribution of molecular hydrogen. By using empirical data concerning the radial density distribution of H I and H2 in the galaxy the intensity of high-energy galactic gamma-radiation is calculated. On the basis of the aforementioned data, constant density distribution of cosmic radiation is more adequate to fit SAS-2 observations from the inner part of the galaxy whereas there are indications for a cosmic-ray density variation in the outer regions of the galaxy.

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