Hard X-ray observations of cosmic gamma-ray sources

Details Hard X-ray observations of cosmic gamma-ray sources Hard X-ray observations of cosmic gamma-ray sources

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.274..343c&link_type=abstract

Nature, vol. 274, July 27, 1978, p. 343, 344. Research supported by the Science Research Council.

Astronomy and Astrophysics

Astronomy

28

Cos-B Satellite, Cosmic Rays, Galactic Radiation, Gamma Ray Astronomy, X Ray Astronomy, Ariel 5 Satellite, Energy Spectra, Photon Density, Tables (Data), X Ray Sources, X Ray Spectroscopy

Scientific paper

The reported hard X-ray studies have been conducted in connection with efforts to identify some of the 13 discrete cosmic gamma-ray sources which have been published by Hermsen et al. (1977) after their investigations involving a use of the COS-B satellite. It is suggested that unresolved sources of this type could account for the galactic disk gamma-ray emission. The studies were based on data accumulated over the last three years in connection with observations made with a scintillation telescope on Ariel 5. The instrument covers the spectral range 26-1,200 keV. Particular attention is given to the two spectral bands 260-570 and 570-1,230 keV. A summary of the results is presented in a table. It can be seen that, with the exception of the Crab Nebula (CG185-5), the only source showing an indication of a hard X-ray flux is CG135+1.

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