Models for COMPTEL 26Al data

Details Models for COMPTEL 26Al data Models for COMPTEL 26Al data

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..410.1114d&link_type=abstract

The fourth compton symposium. AIP Conference Proceedings, Volume 410, pp. 1114-1118 (1997).

Computer Science

10

Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages, Gamma-Ray Sources, Gamma-Ray Bursts, Characteristics And Properties Of The Milky Way Galaxy

Scientific paper

The all-sky data from CGRO Phases 1-5 provide the most detailed constraints to date on the 26Al distribution in the Galaxy. With improved modelling of the instrumental background, different source distribution models can be distinguished. We derive large-scale parameters from first-order models, i.e., a characteristic scale height of 130 pc, and a Galactocentric scale radius of 5 kpc. Spiral structure of the 26Al source distribution improves the fits, as molecular gas provides a better description than geometrical models in the inner Galaxy. We note that infrared emission from dust also matches the 26Al emission quite well. Hints for contributions from more local and localized 26Al components such as Loop I and the Gould Belt are compatible with a massive star origin of 26Al.

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