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Estimating Galactic gas content using different tracers: Compatibility of results, dark gas, and unidentified TeV sources

Torres, Diego F.; de Oña Wilhelmi, Emma; Natale, Giovanni +1 more

A large fraction of Galactic very-high energy (VHE; E ≳ 100 GeV) γ-ray sources is cataloged as unidentified. In this work we explore the possibility that these unidentified sources are located in environment particularly rich in material content unaccounted by traditional tracers. In a scenario where the VHE emission is due to the interaction of t…