Detection of the positron annihilation gamma ray line from the Galactic Center region

Details Detection of the positron annihilation gamma ray line from the Galactic Center region Detection of the positron annihilation gamma ray line from the Galactic Center region

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....94..214a&link_type=abstract

Astronomy and Astrophysics, vol. 94, no. 2, Feb. 1981, p. 214-218. Centre National d'Etudes Spatiales

Astronomy and Astrophysics

Astrophysics

33

Astronomical Spectroscopy, Galactic Nuclei, Gamma Rays, Milky Way Galaxy, Positron Annihilation, Balloon-Borne Instruments, Line Spectra, Time Response

Scientific paper

We present the results of a cosmic gamma ray line search made with a high energy resolution detector.
We have made a positive detection of the 511 keV positron annihilation line in the direction of the galactic center. We have analysed our data assuming either a point source or an extended source. We conclude, from comparison with the results of other authors, that the measurements are consistent with an extended source between -30° < l < +30°. We present also upper limits for other theoretically predicted lines.

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