Journal
PHYSICAL REVIEW LETTERS
Volume 109, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.071101
Keywords
-
Categories
Funding
- Deutsche Forschungsgemeinschaft through the collaborative research center [SFB 676]
- Research Council of Norway [211154/F11]
- State of Hamburg, through the Collaborative Research program Connecting Particles with the Cosmos
- Helmholtz Alliance for Astroparticle Phyics (HAP)
- Initiative and Networking Fund of the Helmholtz Association
Ask authors/readers for more resources
In the energy range from similar to 10(12) eV to similar to 10(15) eV, the Galactic cosmic ray flux has anisotropies both on large scales, with an amplitude of the order of 0.1%, and on scales between similar or equal to 10 degrees and similar or equal to 30 degrees, with amplitudes smaller by a factor of a few. With a diffusion coefficient inferred from Galactic cosmic ray chemical abundances, the diffusion approximation predicts a dipolar anisotropy of comparable size, but does not explain the smaller scale anisotropies. We demonstrate here that energy dependent smaller scale anisotropies naturally arise from the local concrete realization of the turbulent magnetic field within the cosmic ray scattering length. We show how such anisotropies could be calculated if the magnetic field structure within a few tens of parsecs from Earth were known.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available