Cosmic Ray Small Scale Anisotropies and Local Turbulent Magnetic Fields

Understand

Cosmic ray anisotropy has been observed in a wide energy range and at different angular scales by a variety of experiments over the past decade.

• However, no comprehensive or satisfactory explanation has been put forth to date.
• The arrival distribution of cosmic rays at Earth is the convolution of the distribution of their sources and of the effects of geometry and properties of the magnetic field through which particles propagate.
• It is generally believed that the anisotropy topology at the largest angular scale is adiabatically shaped by diffusion in the structured interstellar magnetic field.