| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
The purpose of this research is to elucidate the physical process of generating high energy particles in the heliospheric boundary region by means of numerical simulations. Particular attention is paid to the dynamics of pickup ions, which originate in interstellar neutral particles and are ionized in the heliosphere. It is validated by investigation of their acceleration mechanism at collisionless shock waves, stability of the energy distribution, and the parametric dependence on the acceleration efficiency that pickup ions can be the dominant component of the suprathermal particles (keV to MeV range) in the heliosphere, which will be the source of further accelerated cosmic ray particles.
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