Computer Science
Scientific paper
Oct 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.323..692w&link_type=abstract
Nature (ISSN 0028-0836), vol. 323, Oct. 23, 1986, p. 692-694.
Computer Science
10
Galactic Nuclei, Gamma Ray Spectra, Milky Way Galaxy, Positron Annihilation, Radioactive Decay, Aluminum 26, Line Spectra
Scientific paper
The authors discuss the possibility that the 1.81 MeV 26Al decay line and the 0.51 MeV positron annihilation line, both detected towards the galactic center region, may have a common origin: the initial decay of 26Al to 26Mg with the most probable emission of a positron which eventually annihilates producing the 0.51 MeV line, followed by the decay of 26Mg to the ground state with the emission of the 1.81 MeV line. For this process to be solely responsible for both lines the time-integrated intensities of the lines must be compatible, and it is shown that this is not contradicted by the existing data. The measurement of the properties of the two lines individually and taken together place strong constraints on the source region of this radiation.
Diehl Roland
Schoenfelder Volker
Webber William R.
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