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MeV Gamma Ray Observational Constraints on the Galactic Center Region

Published online by Cambridge University Press:  23 September 2016

R. Diehl ,
P. v.Ballmoos ,
V. Schönfelder  and
G. E. Morfill
R. Diehl
Affiliation:
Max Planck Institut für Extraterrestrische Physik, Garching, FRG
P. v.Ballmoos
Affiliation:
Max Planck Institut für Extraterrestrische Physik, Garching, FRG
V. Schönfelder
Affiliation:
Max Planck Institut für Extraterrestrische Physik, Garching, FRG
G. E. Morfill
Affiliation:
Max Planck Institut für Extraterrestrische Physik, Garching, FRG

Abstract

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MPE Compton Telescope observations of MeV radiation from the direction of the Galactic Center result in constraints on the central gamma-ray source in the Galaxy: The extent of 1.8 MeV line emission from 26Al suggests an 26Al production process with pronounced concentration towards the Galactic Center. The absence of other gamma-ray lines constrains nucleosynthesis and cosmic ray excitation parameters in the Galaxy. Calculations demonstrate that time variable Galactic Center annihilation radiation may be related to a central 26Al source.

Type
The High - Energy View
Information
Symposium - International Astronomical Union , Volume 136: The Galactic Center , 1989 , pp. 617 - 625
Copyright
Copyright © Kluwer 1989 

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