Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010astra...6...49a&link_type=abstract
Astrophysics and Space Sciences Transactions, Volume 6, Issue 1, 2010, pp.49-52
Astronomy and Astrophysics
Astrophysics
3
Scientific paper
A possible origin of the large-scale anisotropy of galactic cosmic rays at TeV energies is discussed. It can be well modeled by a superposition of the Global Anisotropy and the Midscale Anisotropy. The Global Anisotropy would be generated by galactic cosmic rays interacting with the magnetic field in the local interstellar space of scale ~2 pc surrounding the heliosphere. On the other hand, the Midscale Anisotropy, possibly caused by the modulation of galactic cosmic rays in the heliotail, is expressed as two intensity enhancements placed along the Hydrogen Deflection Plane, each symmetrically centered away from the heliotail direction. We find that the separation angle between the heliotail direction and each enhancement monotonously decreases with increasing energy in an energy range 4-30 TeV.
Amenomori Michihiro
Tibet AsΓ Collaboration
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