A possible correlation between the 511 keV annihilation radiation and the 6.7 keV iron line emission in the Galactic plane

Details A possible correlation between the 511 keV annihilation radiation and the 6.7 keV iron line emission in the Galactic plane A possible correlation between the 511 keV annihilation radiation and the 6.7 keV iron line emission in the Galactic plane

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..232..162h&link_type=abstract

IN: Gamma-ray line astrophysics; Proceedings of the International Symposium, Paris, France, Dec. 10-13, 1990 (A92-43619 18-90).

Astronomy and Astrophysics

Astrophysics

Annihilation Reactions, Emission Spectra, Iron, Line Spectra, Nuclear Astrophysics, Galactic Nuclei, Metallicity, Milky Way Galaxy, Nuclear Fusion, Point Sources

Scientific paper

The contributions of annihilation radiation from an interstellar component and a Galactic component are studied analytically. The models assume that extended sources are used to express the interstellar 511-keV emission so that the distribution of radiation is consistent with that of high-energy gamma rays or molecular CO gas. The diffuse line is assumed to follow the iron-line radiation along the Galactic longitude as a radiative product of supernova remnants. The analysis shows that two components could contribute the 511-keV annihilation radiation both from within the Galactic center and from interstellar annihilation sources. The results suggest an extended source with an intensity of 0.002 ph/sq cm/s/rad near the Galactic center, although the source is probably not variable and compact.

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