Energetic positron propagation from pulsars: an analytical two-zone diffusion model
S. M. Osipov, A. M. Bykov, A. E. Petrov, V. I. Romansky
Abstract
Abstract We study the cosmic rays (CR) positrons propagation from the near Earth Geminga pulsar wind nebula on the basis of a analytical model of the two-zone spherically symmetric particle diffusion from a central source. We calculate the near Earth spectral distribution of positrons originating from the pulsar. The obtained spectra are compared with the results of another authors considering the problem of the positron excess revealed by PAMELA and AMS-02 experiments.
Topics & Concepts
PulsarPhysicsPositronAstrophysicsDiffusionCosmic raySpectral lineComputational physicsAstronomyNuclear physicsElectronThermodynamicsDark Matter and Cosmic PhenomenaAstrophysics and Cosmic PhenomenaCosmology and Gravitation Theories