Observation of CR Anisotropy with ARGO-YBJ

Abstract

The measurement of the anisotropies of cosmic ray arrival direction provides important informations on the propagation mechanisms and on the identification of their sources. In this paper we report the observation of anisotropy regions at different angular scales. In particular, the observation of a possible anisotropy on scales between $\sim$ 10 ${}^{\circ }$ and $\sim$ 30 ${}^{\circ }$ suggests the presence of unknown features of the magnetic fields the charged cosmic rays propagate through, as well as potential contributions of nearby sources to the total flux of cosmic rays. Evidence of new weaker few-degree excesses throughout the sky region $195^{\circ }\le$ R.A. $\le 315^{\circ }$ is reported for the first time.

Talk given at 12th TAUP Conference 2011, 5-9 September 2011, Munich, Germany

References in corpus (5)

• Anisotropy and Corotation of Galactic Cosmic Rays
• Discovery of Localized Regions of Excess 10-TeV Cosmic Rays
• The Large Scale Cosmic-Ray Anisotropy as Observed with Milagro
• Evolution of the cosmic ray anisotropy above 10^{14} eV
• Observation of the Cosmic Ray Moon shadowing effect with ARGO-YBJ

Cited by in corpus (3)

• Heliosheath Processes and the Structure of the Heliopause: Modeling Energetic Particles, Cosmic Rays, and Magnetic Fields
• Magnetic fields and cosmic ray anisotropies at TeV energies
• Cosmic Rays and Stochastic Magnetic Reconnection in the Heliotail