Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.0756d&link_type=abstract
American Astronomical Society, HEAD meeting #9, #7.56; Bulletin of the American Astronomical Society, Vol. 38, p.358
Astronomy and Astrophysics
Astronomy
Scientific paper
Interactions of cosmic rays with interstellar gas and photons make the Milky Way a bright, diffuse source of high-energy gamma rays. An accurate model of the diffuse emission is important for studies of point- and small extended sources of gamma rays as well as the extragalactic diffuse emission. It is also diagnostic of the distributions of gas and cosmic rays in the Milky Way. We present the model under development by the GLAST Large Area Telescope (LAT) team and demonstrate the sensitivity with which the model can be tuned using simulated flight data, to resolve ambiguities in the distribution of interstellar gas or refine the distribution of cosmic-ray sources. The model is implemented in the framework of the GALPROP code for cosmic-ray propagation and incorporates up-to-date surveys of the interstellar medium, as well as current models for the interstellar radiation field and updated production functions and inverse scattering calculations.
Digel Seth William
GLAST LAT Collaboration Diffuse
Molecular Clouds Working Group
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