Final SAS-2 gamma ray results on sources in the galactic anticenter region

Technical Report · Sun Aug 01 04:00:00 EDT 1976

OSTI ID:7223030

Thompson, D J; Fichtel, C E; Hartman, R C; Kniffen, D A; Lamb, R C

Analysis of SAS-2 high energy Gamma ray data from the direction of the galactic anticenter shows that this region is characterized by a diffuse emission from the galactic plane which has a maximum along b = 0 deg and an enhancement toward negative latitudes associated with Gould's Belt, a strong point source in the direction of the Crab nebula, and a second intense localized source near galactic coordinates 195 deg, +5 deg. Gamma ray emission from the Crab source is dominated by a pulsed flux from PSR 0531+21. The total flux above 100 MeV is 3.7 + or- 0.8 million/cm/sup 2/ s. The source near 195 deg, + 5 deg has a flux above 100 MeV of 4.3 +or- 0.9 million/cm/sup 2/ s. Its spectrum appears flatter than that of the Crab. The diffuse galactic plane emission at negative lattitudes shows a general correlation with the local matter distribution associated with Gould's Belt. The calculated gamma ray intensity agrees well with the SAS-2 observations. (auth)

• Research Organization: National Aeronautics and Space Administration, Greenbelt, MD (USA). Goddard Space Flight Center
• OSTI ID: 7223030
• Report Number(s): N-76-32094; NASA-TM-X-71186; X-662-76-198
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CORRELATIONS
COSMIC GAMMA SOURCES
COSMIC PHOTONS
COSMIC RADIATION
COSMIC RAY SOURCES
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
FLUX DENSITY
GALAXIES
GAMMA RADIATION
GAMMA SPECTRA
IONIZING RADIATIONS
MASSLESS PARTICLES
MATTER
MEV RANGE
MEV RANGE 100-1000
MILKY WAY
PHOTONS
RADIATIONS
SPECTRA