The log N-log S graph for the COS-B galactic gamma-ray sources

Details The log N-log S graph for the COS-B galactic gamma-ray sources The log N-log S graph for the COS-B galactic gamma-ray sources

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...241.1161b&link_type=abstract

Astrophysical Journal, Part 1, vol. 241, Nov. 1, 1980, p. 1161-1165.

Astronomy and Astrophysics

Astronomy

8

Galactic Radiation, Gamma Ray Astronomy, Milky Way Galaxy, Curve Fitting, Graphs (Charts), Star Distribution

Scientific paper

As a tool to the study of the collective properties of the 26 low-galactic-latitude γ-ray sources in the second CO S-B catalog their integral number-intensity relation, log N( > S, is investigated. The difficulty of accounting for the large flux errors is overcome by a simple Monte Carlo method. Especially when experimental selection effects are removed, significant differences are evident in the graph referring to the "center" (300° < lII < 60°) and "anticenter" regions of the Galaxy. Such differences may be explained in terms of two populations of γ-ray sources, one being characterized by a marked density gradient toward the inner Galaxy.

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