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SAS-2 observations of gamma rays from the galactic planePreliminary data are given for the SAS-2 high energy galactic gamma ray observation. These data include both latitude and longitude distributions. The longitude distribution shows a high density region. The latitude distributions toward the center and the anti-center are markedly different, the former showing a two-component structure of half-widths of approximately 3 and 6 deg. The energy spectrum in the range 35 to 200 MeV is hard, consistent with cosmic ray interactions with interstellar matter, including neutral pions decay and emission from energetic electron interactions. The data is consistent with an interpretation in terms of the confinement of the cosmic rays in the spiral arms.
Document ID
19750017766
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Thompson, D. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bignami, G. F.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Fichtel, C. E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hartman, R. C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kniffen, D. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 8, 2013
Publication Date
November 1, 1974
Publication Information
Publication: ESRO The Context and Status of Gamma Ray Astronomy
Subject Category
Instrumentation And Photography
Accession Number
75N25838
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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