Constraints on the TeV source population and its contribution to the galactic diffuse TeV emission

Abstract

The detection by the HESS atmospheric Cerenkov telescope of fourteen new sources from the Galactic plane makes it possible to estimate the contribution of unresolved sources like those detected by HESS to the diffuse Galactic emission measured by the Milagro Collaboration. The number-intensity relation and the luminosity function for the HESS source population are investigated. By evaluating the contribution of such a source population to the diffuse emission we conclude that a significant fraction of the TeV energy emission measured by the Milagro experiment could be due to unresolved sources like HESS sources. Predictions concerning the number of sources which Veritas, Milagro, and HAWC should detect are also given.

Accepted for publication in Astroparticle Physics

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Cited by in corpus (18)

• Milagro Observations of Multi-TeV Emission from Galactic Sources in the Fermi Bright Source List
• Probing the Galactic Origin of the IceCube Excess with Gamma-Rays
• A Measurement of the Spatial Distribution of Diffuse TeV Gamma Ray Emission from the Galactic Plane with Milagro
• Study of the diffuse gamma-ray emission from the Galactic plane with ARGO-YBJ
• Surveys with the Cherenkov Telescope Array
• Galactic diffuse gamma rays meet the PeV frontier
• Gamma rays as probes of cosmic-ray propagation and interactions in galaxies
• Neutrinos and Cosmic Rays Observed by IceCube
• Modelling the Galactic very-high-energy $\gamma$-ray source population
• Where are Milky Way's Hadronic PeVatrons?
• Testing the Dark Matter Interpretation of the PAMELA Excess through Measurements of the Galactic Diffuse Emission
• The TeV gamma-ray luminosity of the Milky-Way and the contribution of H.E.S.S. unresolved sources to VHE diffuse emission
• Prospects for detection of a Galactic diffuse neutrino flux
• Cosmic-ray knee and diffuse gamma, e+ and pbar fluxes from collisions of cosmic rays with dark matter
• Constraining the cosmic-ray pressure in the inner Virgo Cluster using H.E.S.S. observations of M 87
• Ground-based Gamma Ray Astronomy
• An Updated Search of Steady TeV $\gamma -$Ray Point Sources in Northern Hemisphere Using the Tibet Air Shower Array
• First constraints on axion-like particles from Galactic sub-PeV gamma rays