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High-resolution spectrum of the Galactic centerRecent observations of the Galactic center region indicate the presence of a narrow gamma-ray line feature at 170 keV, and theoretical speculations suggest it may result from Compton backscattering of the 511 keV annihilation radiation. The high-resolution gamma-ray spectrometer on HEAO 3 observed the Galactic center in the fall of 1979 and in the spring of 1980. In view of the recent developments, the HEAO data were re-examined to search for this new feature and to look for possible correlations with the 511 keV line emisison. No evidence for such Compton backscattered radiation was found and the derived upper limits for emission in a line feature near 170 keV were well below previously reported fluxes, indicating possible time variability.
Document ID
19930044916
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mahoney, W. A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Ling, J. C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wheaton, W. A.
(JPL Pasadena, CA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: Astronomy and Astrophysics Supplement Series
Volume: 97
Issue: 1
ISSN: 0365-0138
Subject Category
Astrophysics
Accession Number
93A28913
Distribution Limits
Public
Copyright
Other

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