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The study of cosmic ray anisotropy in the TeV-PeV energy range could provideclues about the origin and propagation of cosmic rays in our galacticneighborhood. Because the observed anisotropy is very small, below theper-mille level, large event volumes are needed in order to characterize it insufficient detail. Over the last six years, the IceCube Observatory hascollected 150 billion cosmic ray induced muon events. This large data samplemade it possible to detect anisotropies in the southern hemisphere, down to the10$^{-5}$ level, at primary energies in excess of 10 TeV. The observedanisotropy is not a simple dipole, but it can be described as composed ofmultipole components of the spherical harmonic expansion, to about10$^{\circ}$. A change in topological structure of the cosmic ray arrivaldistribution is observed above 100 TeV. Data collected with the air showerarray IceTop above 300 TeV confirm the observations up to the PeV energy scale.Moreover, the addition of data collected with the AMANDA neutrino telescope,which operated between 2000 and 2007, has enabled us to search for timevariability in the observed TeV anisotropy.

Observation of TeV-PeV cosmic ray anisotropy with IceCube, IceTop and AMANDA