Observation of the Galactic 1809 keV gamma-ray line with the HEXAGONE spectrometer

Details Observation of the Galactic 1809 keV gamma-ray line with the HEXAGONE spectrometer Observation of the Galactic 1809 keV gamma-ray line with the HEXAGONE spectrometer

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..232..123m&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

Astronomy

6

Balloon-Borne Instruments, Gamma Ray Astronomy, Gamma Ray Spectrometers, Line Spectra, Massive Stars, Supernova 1987A, Wolf-Rayet Stars

Scientific paper

An observation of the Galactic 1809 keV gamma-ray line produced by radioactive Al-26 in the interstellar medium is reported. The measurement was performed with the high resolution germanium spectrometer HEXAGONE on a balloon flight in May 1989 from Alice Springs, Australia. The differential spectrum of the Galactic center region shows a narrow line at 1809 keV corresponding to a flux of (1.9 +/- 0.9) x 10 exp-4 photons/sq cm/s assuming a source at the Galactic center. The available observations of the 1809 keV line in the context of models that have been proposed for the origin of the galactic Al-26 is discussed.

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