Conventional cosmic ray propagation models face problems reproducing the diffuse γ-ray spectrum measured by Fermi-LAT over the entire sky. Those models also fail to smoothly connect Fermi-LAT results with data above the TeV as those taken by Milagro in the inner Galactic plane. In this contribution we show that a representative model adopting a spatial dependent rigidity scaling of the diffusion coefficient can reproduce all those experimental results without spoiling the consistency with local cosmic-ray measurements. We use the same model to compute the diffuse neutrino emission of the Galaxy and compare it with IceCube and ANTARES results.
Gamma-ray and neutrino diffuse emissions of the Galaxy above the TeV / Gaggero, D.; Grasso, D.; Marinelli, A.; Urbano, A.; Valli, M.. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 718:5(2016), p. 052018. [10.1088/1742-6596/718/5/052018]
Gamma-ray and neutrino diffuse emissions of the Galaxy above the TeV
Marinelli A.;
2016
Abstract
Conventional cosmic ray propagation models face problems reproducing the diffuse γ-ray spectrum measured by Fermi-LAT over the entire sky. Those models also fail to smoothly connect Fermi-LAT results with data above the TeV as those taken by Milagro in the inner Galactic plane. In this contribution we show that a representative model adopting a spatial dependent rigidity scaling of the diffusion coefficient can reproduce all those experimental results without spoiling the consistency with local cosmic-ray measurements. We use the same model to compute the diffuse neutrino emission of the Galaxy and compare it with IceCube and ANTARES results.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
