Time-variable positron annihilation radiation from the galactic center direction

Our balloon-borne germanium ..gamma..-ray telescope has been flown for a third time over Alice Springs, Australia to further study the galactic center source 511 keV annihilation-line radiation. The source was found to be in an ''off'' or ''low'' state. Our be...

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Veröffentlicht in:	Astrophys. J., Lett. Ed.; (United States) Lett. Ed.; (United States), 1982-09, Vol.260, p.L1
Hauptverfasser:	Leventhal, M., MacCallum, C. J., Huters, A. F., Stang, P. D.
Format:	Artikel
Sprache:	eng
Schlagworte:	640101 - Astrophysics & Cosmology- Cosmic Radiation 640105 - Astrophysics & Cosmology- Galaxies ANNIHILATION ANTILEPTONS ANTIMATTER ANTIPARTICLES BASIC INTERACTIONS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COSMIC GAMMA SOURCES COSMIC POSITRONS COSMIC RADIATION COSMIC RAY SOURCES ELECTROMAGNETIC INTERACTIONS ELECTROMAGNETIC RADIATION ELEMENTARY PARTICLES ERUPTIVE VARIABLE STARS FERMIONS GALAXIES GALAXY NUCLEI GAMMA RADIATION GAMMA SPECTRA INTERACTIONS IONIZING RADIATIONS LEPTONS MILKY WAY POSITRONS RADIATIONS SPECTRA STARS SUPERNOVAE VARIABLE STARS VARIATIONS
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