Titlebook: Electromagnetic Radiation in Space; Proceedings of the T J. G. Emming Conference proceedings 1967 D. Reidel Publishing Company, Dordrecht,

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Robert W. Baloh,Robert E. BartholomewThis article is concerned with cosmic electromagnetic radiation with a quantum energy exceeding 0.2 MeV. However, no sharp distinction will be made between X-rays and gamma-rays.

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Celestial Gamma-Rays — Observational AspectsThe most important characteristic parameters of celestial .-rays, such as spectrum, angular distribution and variations in time are briefly reviewed. The various ways of observations of .-rays are listed. The experimental results obtained so far are summarised.

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https://doi.org/10.1007/978-3-642-80395-6omy. No hard and fast demarcation can be drawn and a considerable region of overlap exists, including, for example, the moon and planets. There is a basic difference between the two subjects in the experimental sense since most geophysical experiments use the spacecraft as a probe to make measuremen

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