Published October 1, 1978
| Version v1
Journal article
Detection of 511 keV positron annihilation radiation from the galactic center direction
Description
A balloon-borne germanium γ-ray telescope was flown over Alice Springs, Australia, in an attempt to detect spectral features from the galactic center (GC) direction. A 511 keV positron annihilation line was detected at a flux level of (1.22 +- 0.22) x 10-3 photons s-1 cm-2. Suggestive evidence for the detection of the three-photon positronium (ps) continuum is presented. A brief discussion of the possible origin of the positrons is given
Additional details
Publishing Information
- Journal Title
- Astrophys. J., Lett.
- Journal Volume
- 225
- Journal Issue
- 1
- Series
- Astrophys. J., Lett.
- Journal Page Range
- L11-L14
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 10434927
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- ANNIHILATION; COSMIC GAMMA SOURCES; ELECTROMAGNETIC INTERACTIONS; GAMMA DETECTION; GAMMA SPECTRA; MILKY WAY; PHOTONS; POSITRONIUM; POSITRONS
- Descriptors DEC
- ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BASIC INTERACTIONS; COSMIC RAY SOURCES; ELEMENTARY PARTICLES; FERMIONS; GALAXIES; INTERACTIONS; LEPTONS; MASSLESS PARTICLES; MATTER; PARTICLE INTERACTIONS; RADIATION DETECTION; SPECTRA