Observation of the 0. 511 MeV annihilation line from the inner Galaxy with the Figaro II experiment
Journal Article
·
· Astrophysical Journal; (USA)
- Centre d'Etudes Spatiales des Rayonnements, Toulouse (France) CNR, Istituto di Astrofisica Spaziale, Frascati (Italy)
A positive detection of the 0.511-MeV annihilation line from the inner Galaxy is reported. The observation has been performed with the Figaro II experiment (field of view 77 deg) during a balloon flight from Charleville, Australia on November 25-26, 1988. Assuming a single point source the flux is 0.00224 + or - 0.00041 photons/sq cm sec, while for an extended, disk source the differential flux is 0.00191 + or - 0.00032 photons/sq cm sec rad at the Galactic center. 14 refs.
- OSTI ID:
- 6696979
- Journal Information:
- Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 356; ISSN ASJOA; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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Tue Sep 01 00:00:00 EDT 1992
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·
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Related Subjects
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIRSHIPS
ANNIHILATION
BALLOONS
BASIC INTERACTIONS
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
GALAXIES
GALAXY NUCLEI
GAMMA RADIATION
INTERACTIONS
IONIZING RADIATIONS
MILKY WAY
MORPHOLOGY
POINT SOURCES
RADIATION FLUX
RADIATION SOURCES
RADIATIONS
RESOLUTION
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIRSHIPS
ANNIHILATION
BALLOONS
BASIC INTERACTIONS
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
GALAXIES
GALAXY NUCLEI
GAMMA RADIATION
INTERACTIONS
IONIZING RADIATIONS
MILKY WAY
MORPHOLOGY
POINT SOURCES
RADIATION FLUX
RADIATION SOURCES
RADIATIONS
RESOLUTION