THE GAMMA-RAY AND NEUTRINO SKY: A CONSISTENT PICTURE OF FERMI-LAT, MILAGRO, AND ICECUBE RESULTS

By D. Gaggero, D. Grasso, A. Marinelli, A. Urbano, M. Valli. 2015

144 citations recorded by the source corpus.

We compute the γ-ray and neutrino diffuse emission of the Galaxy on the basis of a recently proposed phenomenological model characterized by radially dependent cosmic-ray (CR) transport properties. We show how this model, designed to reproduce both Fermi-LAT γ-ray data and local CR observables, naturally reproduces the anomalous TeV diffuse emission observed by Milagro in the inner Galactic plane. Above 100 TeV our picture predicts a neutrino flux that is about five (two) times larger than the neutrino flux computed with conventional models in the Galactic Center region (full-sky). Explaining in that way up to ∼25% of the flux measured by IceCube, we reproduce the full-sky IceCube spectrum adding an extra-Galactic component derived from the muonic neutrinos flux in the northern hemisphere. We also present precise predictions for the Galactic plane region where the flux is dominated by the Galactic emission.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f6dfed8bf07e3f779deb602259f2e4d71f1f348c

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

Cosmic-ray propagation with DRAGON2: I. numerical solver and astrophysical ingredients (2016, unknown): “del CR antiprotons as CR secondaries and from DM annihilations [29,30]; to study the synchrotron emission from galactic leptons [31]; and to reproduce -ray and neutrino diuse emissions above the TeV [32]. Most of these original results were obtained thanks to the innovative features already present ”
KM3MeT 2.0 Letter of intent for ARCA and ORCA (2016, background): “In [52], these authors estimate that the astrophysical flux detected by IceCube in both the HESE [13] and diffuse muon [56] analyses is still dominated by an extragalactic diffuse component, with galactic emission respectively accounting for 15% and 10% of events.”
IceCube-Gen2: the window to the extreme Universe (2020, background): “This is not necessarily the case in more complex diffusion scenarios [223–225], and/or for strongly inhomogeneous source and target distributions in the Galaxy [226–229], as well as time-dependent local CR injection episodes [230].”