"On the astrophysics of galactic cosmic ray anisotropy" by Paolo Desiati
February 7, 2011 - 10:00am
Galactic cosmic rays are found to have a broad and faint energy-dependent anisotropy in arrival direction from a few tens of GeV to hundreds TeV. The observations show large angular features across the sky overlapped with finer sub-structures, some of which manifest as highly significant localized excess regions. Currently there is no explanation for this puzzling observation. Depending on the cosmic ray energy and type, causes could be linked to the influence of the heliosphere, or of the interstellar medium. In this presentation the acceleration and propagation of cosmic rays is discussed along with their detection. The intringuing possibility that the anisotropy at multi-TeV energy can be used to probe the boundary region between the heliosphere and interstellar medium and that it can indirectly link to their origin in our galactic neighborhood, is also discussed.