Speaker
Description
High energy cosmic ray electrons and positrons probe the local properties of
our Galaxy. In fact, regardless of the production mechanism, electromagnetic
energy losses limit the typical propagation scale of GeV-TeV electrons and
positrons to a few kpc.
In the diffusion model, the presence of nearby and dominant sources may produce
an observable dipole anisotropy in the cosmic ray fluxes. This observable is
crucial to discern the physical origin of the observed electron and positron
fluxes.
I will present a detailed study on the role of anisotropies from nearby
sources in the interpretation of present cosmic ray electron and positrons
fluxes. Predictions for the dipole anisotropy from known astrophysical sources
as supernova remnants and pulsars of the Green and ATNF catalogs will be
shown. In particular, I will discuss anisotropies for single sources as well
as for a distribution of catalog sources.
The results [1] will be compared with current anisotropy upper limits from
the Fermi-LAT, AMS-02 and PAMELA experiments.
[1]S.Manconi, M.Di Mauro, F.Donato, in preparation.
