Cosmic gamma rays

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Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977newsc..74..194h&link_type=abstract

New Scientist, vol. 74, Apr. 28, 1977, p. 194-196.

Astronomy and Astrophysics

Astronomy

Cosmic X Rays, Galactic Radiation, Gamma Rays, Radio Spectra, Satellite Observation, Cos-B Satellite, Halos, Nonthermal Radiation, Sas-2, Spaceborne Astronomy, Spark Chambers, Supernova Remnants

Scientific paper

Evidence on high-energy galactic cosmic gamma-radiation, correlated with nonthermal radiation at the RF end of the spectrum, is examined for information on the origin of cosmic rays, on the large-scale structure of the galaxy and on the existence of a galactic halo (obscured by optically opaque dust clouds), on pulsar behavior, and on the early universe. Some correlation of gamma-radiation with dense gas clouds and frequency of supernova explosions, and specifically the Crab and Vela remnants, is noted. Spark-chamber data from the SAS-2 and COS-B satellites and experimental techniques to resolve uncertainties in observations of cosmic gamma-radiation are discussed. Isotropic low-energy gamma-radiation, possibly of extragalactic origin, is examined as a test of theories on evolution of the universe.

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