HIGH-ENERGY GAMMA-RAY ASTRONOMY
The search for gamma radiation with energy greater than 50 Mev from extraterrestrial sources has resulted in some of the most interesting and most difficuit balloon and space-craft experiments. The present status of this search is reviewed. The first attempt to detect this radiation from solar flares resulted in no increase of the counting rate above background intensity. An upper limit of 1.0 x 10/sup -2/ photons cm/sup -2/ sec/sup -1/ in the type 2 flare of March 13, 1962, and an upper limit of 1.2 x 10/sup -2/ photons cm/sup -2/ sec/sup -1/ in the type 3 flare of March 22, 1962, was determined for the gamma- ray flux. The upper limit to the flux from the quiet sun was 1.0 x 10/sup -2/ photons cm/sup -2/ sec/sup -1/. These results represent a partial reduction of the data from the first Orbiting Solar Observatory. (auth)
- Research Organization:
- Univ. of Rochester, N.Y.; and Smithsonian Astrophysical Observatory, Cambridge, Mass.; IEEE (Inst. Elec. Electron. Engrs.)
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-022407
- OSTI ID:
- 4693100
- Journal Information:
- Trans. Nucl. Sci., Journal Name: Trans. Nucl. Sci. Vol. Vol: NS-10: No. 2
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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