Emission in the 0.3 to 1.0 MeV range from the Galactic Center region
- 1 January 1982
- proceedings article
- Published by AIP Publishing in AIP Conference Proceedings
- Vol. 83 (1) , 144-147
- https://doi.org/10.1063/1.33503
Abstract
The University of New Hampshire’s Large Scintillator Gamma Ray Telescope observed the Galactic Center region on 21‐23 November 1977, ten days after a similar observation by the Bell and Sandia Laboratories’1 high resolution Ge gamma ray telescope. The UNH measurements are consistent with line emission near 511 keV with a flux that is at least twice as intense as the earlier measurement. The measurement requires a line intensity of (4.0±.6)×10−3 γ cm−2 s−1 and a flat spectral feature in the energy range 300 to 511 keV consistent with 70–80% β+ annihilation from ground states of positronium.Keywords
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