Mapping the global heliosphere by detecting energetic neutral atoms (ENAs), IBEX derived the semi-direct information on the structure of the large-scale magnetic field surrounding the heliosphere. Multi-TeV galactic cosmic rays (GCRs) also sense the global structure of the magnetic field within the whole heliosphere as well as the field surrounding the heliosphere, and can provide an additional tool to explore the global structure of these fields. We analyze, in this context, the multi-TeV GCR intensity observed with the Tibet Air Shower (AS) experiment, which clearly shows a midscale component structure observed as the excess intensity along Gurnett's HDP (Hydrogen Deflection Plane), as well as the global component structure. We find that the amplitude of the midscale component is only weakly dependent on GCR energy, while its angular extension along the HDP plane monotonously decreases with increasing energy. On the basis of these results, we discuss the possible origin of the midscale anisotropy.
|ホスト出版物のタイトル||AIP Conference Proceedings|
|出版ステータス||Published - 2010|
|イベント||9th Annual International Astrophysics Conference on Pickup Ions Throughout the Heliosphere and Beyond: Dedicated to the Memory of Sir W. Ian Axford January 2, 1933 - March 13, 2010 - Maui, HI|
継続期間: 2010 3月 14 → 2010 3月 19
|Other||9th Annual International Astrophysics Conference on Pickup Ions Throughout the Heliosphere and Beyond: Dedicated to the Memory of Sir W. Ian Axford January 2, 1933 - March 13, 2010|
|Period||10/3/14 → 10/3/19|
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