Physics
Scientific paper
May 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aipc...83..139p&link_type=abstract
IN: The galactic center; Proceedings of the Workshop, Pasadena, CA, January 7, 8, 1982 (A83-40676 19-90). New York, American Ins
Physics
2
Astronomical Spectroscopy, Galactic Nuclei, Gamma Ray Spectrometers, Milky Way Galaxy, Balloon Flight, Positron Annihilation
Scientific paper
The results of measurements made of the gamma ray emission originating from the galactic center are reviewed. The data were gathered with balloon borne gamma ray spectrometers, with the scans centering on 511 keV. Minimum Chi-sq fits were calculated for the recorded emissions, assuming a constant source modulated by the detector response and superimposed on a constant background. A time history of the 511 keV line intensity demonstrated variability in the feature, whereas the continuum spectrum showed a high correlation with previous measurements. An excess in the continuum just below the 511 keV line was taken as an indication of positronium formation.
Cline Thomas L.
Durouchoux Ph.
Hameury Jean-Marie
Paciesas William Simon
Teegarden Bonnard J.
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