Gamma-ray and neutrino diffuse emissions of the Galaxy above the TeV

14th International Conference on Topics in Astroparticle and Underground Physics

物理学;天文学

Gaggero, D.^1 ; Grasso, D.^2 ; Marinelli, A.^2 ; Urbano, A.^3 ; Valli, M.^4

GRAPPA Institute, University of Amsterdam, Science Park 904, Amsterdam

1090 GL, Netherlands^1

INFN, Dipartimento di Fisica E. Fermi, Pisa University, Largo B. Pontecorvo 3, Pisa

1-56127, Italy^2

CERN, Theory Division, Genéve 23

CH-1211, Switzerland^3

SISSA, INFN, via Bonomea 265, Trieste

1-34136, Italy^4

关键词: ANTARES;    Cosmic ray propagation;    Diffuse emission;    Galactic plane;    Gamma ray spectra;    Ice cubes;    Neutrino emission;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/718/5/052018/pdf
DOI  :  10.1088/1742-6596/718/5/052018

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

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.