Map of the Galactic center region in the 1.8 MeV Al-26 gamma-ray line

Details Map of the Galactic center region in the 1.8 MeV Al-26 gamma-ray line Map of the Galactic center region in the 1.8 MeV Al-26 gamma-ray line

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...318..654v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 318, July 15, 1987, p. 654-663.

Astronomy and Astrophysics

Astrophysics

40

Aluminum 26, Astronomical Maps, Galactic Nuclei, Gamma Ray Spectra, Line Spectra, Milky Way Galaxy, Balloon-Borne Instruments, Energy Spectra, Telescopes

Scientific paper

During a balloon flight with the MPI Compton telescope from Uberaba/Brazil, the 1.809 MeV γ-ray line from radioactive 26Al was detected when the Galactic center came into the field of view. The image is consistent with a "point"-source origin at the Galactic center. The statistical significance of the line detection is 3.8 σ, and the point-source line flux is (6.4±2.6)×10-4cm-2s-1. The statistical accuracy of the measurement is, however, not sufficient to exclude a diffuse origin of the γ-ray line in interstellar space from unresolved candidate sources.

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