PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Gamma-Ray Astronomy. GA-galactic
Consequences of using a new ISRF model for modeling Galactic diffuse gamma-ray emission
F. Niederwanger, O. Reimer,* R. Kissmann, C. C Popescu, R. J Tuffs
*corresponding author
Full text: pdf
Pre-published on: August 16, 2017
Published on: August 03, 2018
Abstract
Galactic diffuse gamma-ray emission is an important constituent among the total observed gamma-ray emission of our Galaxy. Here we present specific developments to accommodate a new Interstellar Radiation Field (ISRF) model for use in the PICARD code for modeling of Galactic cosmic ray propagation and respective gamma-ray emission. On the basis of the new ISRF we provide predictions on Galactic diffuse gamma-ray emission in the GeV to TeV energy regime, and compare to a commonly used different ISRF. Emphasis was laid on obtaining robust predictions for observable signatures in the very high energy gamma-ray regime with a special attention to the energy regime for HESS. One of the most noteworthy results from using the new ISRF indicate increased gamma-ray fluxes in the Galactic Center region between 10 GeV and 10 TeV.
DOI: https://doi.org/10.22323/1.301.0683
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