- Author
- Year
- 2016
- Title
- Gamma-ray and neutrino diffuse emissions of the Galaxy above the TeV
- Journal
- Proceedings of Science
- Volume
- 236
- Article number
- 489
- Number of pages
- 8
- Document type
- Article
- Faculty
- Faculty of Science (FNWI)
- Institute
- Institute for Theoretical Physics Amsterdam (ITFA)
- Abstract
-
As recently shown, Fermi-LAT measurements of the diffuse gamma-ray emission from the Galaxy favor the presence of a smooth softening in the primary cosmic-ray spectrum with increasing Galactocentric distance. This result can be interpreted in terms of a spatial-dependent rigidity scaling of the diffusion coefficient. The DRAGON code was used to build a model based on such feature. That scenario correctly reproduces the latest Fermi-LAT results as well as local cosmic-ray measurements from PAMELA, AMS-02 and CREAM. Here we show that the model, if extrapolated at larger energies, grasps both the gamma-ray flux measured by MILAGRO at 15 TeV and the H.E.S.S. data from the Galactic ridge, assuming that the cosmic-ray spectral hardening found by those experiments at about 250 GeV/n is present in the whole inner Galactic plane region. Moreover, we show as that model also predicts a neutrino emission which may account for a significant fraction, as well as for the correct spectral shape, of the astrophysical flux measured by IceCube above 25 TeV.
- URL
- go to publisher's site
- Other links
- Link to publication in Scopus
- Language
- English
- Note
- The 34th International Cosmic Ray Conference : ICRC2015 : 30 July- 6 August, 2015, The Hague, The Netherlands
- Persistent Identifier
- https://hdl.handle.net/11245.1/5aaefac7-fc45-4662-8a90-a440c5b219e8
- Downloads
-
pdf1(Final published version)
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