Gamma-ray lines and continuum radiation from the galactic center direction
1980; IOP Publishing; Volume: 240; Linguagem: Inglês
10.1086/158237
ISSN1538-4357
AutoresM. Leventhal, C. J. MacCallum, A. F. Huters, P. D. Stang,
Tópico(s)Radiation Therapy and Dosimetry
Resumoview Abstract Citations (57) References (13) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Gamma-ray lines and continuum radiation from the galactic center direction Leventhal, M. ; MacCallum, C. J. ; Huters, A. F. ; Stang, P. D. Abstract A balloon-borne germanium gamma-ray telescope has been reflown over Alice Springs, Australia. The detection of a sharp 511 keV electron-positron annihilation line from the galactic center (GC) direction has been confirmed at a flux level compatible with a previous result. No evidence for several other candidate lines was found, indicating that they were statistical fluctuations in the previous data. Evidence for a significant change in the GC inverse power-law continuum has been obtained, suggesting that its origin lies in the many unresolved and highly variable pointlike X-ray sources in the field of view. Publication: The Astrophysical Journal Pub Date: August 1980 DOI: 10.1086/158237 Bibcode: 1980ApJ...240..338L Keywords: Galactic Nuclei; Galactic Radiation; Gamma Ray Astronomy; Gamma Ray Spectra; Line Spectra; Milky Way Galaxy; Balloon-Borne Instruments; Continuous Radiation; Galactic Structure; Gamma Ray Telescopes; Radiant Flux Density; X Ray Sources; Astrophysics full text sources ADS |
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