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Probing galactic cosmic ray distribution with TeV gamma-ray sky

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arxiv 1904.03894 v1 pith:ZDLXDC4N submitted 2019-04-08 astro-ph.HE hep-ph

classification astro-ph.HEhep-ph
keywords cosmicdistributionfluxhessconstraintsdiffusegalacticgamma-ray
verification ladder T0 review T1 audit T2 compute T3 formal
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The distribution of cosmic rays in the Galaxy at energies above few TeVs is still uncertain and this affects the expectations for the diffuse gamma flux produced by hadronic interactions of cosmic rays with the interstellar gas. We show that the TeV gamma-ray sky can provide interesting constraints. Namely, we compare the flux from the galactic plane measured by Argo-YBJ, HESS, HAWC and Milagro with the expected flux due to diffuse emission and point-like and extended sources observed by HESS showing that experimental data can already discriminate among different hyphoteses for cosmic ray distribution. The constraints can be strengthened if the contribution of sources not resolved by HESS is taken into account.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. LHAASO protons versus LHAASO diffuse gamma-rays: a consistency check

    astro-ph.HE 2025-06 conditional novelty 6.0 of 10

    The LHAASO proton spectrum, folded with gas maps and interaction models, predicts a diffuse gamma-ray flux that exceeds LHAASO's measured diffuse gamma-ray flux, especially in the inner Galaxy.

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