Describing the Observed Cosmic Neutrinos by Interactions of Nuclei with Matter

Understand

IceCube have observed neutrinos which are presumably of extra-galactic origin.

• Since specific sources have not yet been identified, we discuss what could be learned from the conceptual point of view.
• We use a simple model for neutrino production from the interactions between nuclei and matter, and we focus on the description of the spectral shape and flavor composition observed by IceCube.
• Our main parameters are spectral index, maximal energy, magnetic field, and composition of the accelerated nuclei.