Study of CME-driven shock acceleration of solar energetic particles with numerical simulations and data analysis

Details Study of CME-driven shock acceleration of solar energetic particles with numerical simulations and data analysis Study of CME-driven shock acceleration of solar energetic particles with numerical simulations and data analysis

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh33a1816w&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH33A-1816

Physics

Plasma Physics

[7514] Solar Physics, Astrophysics, And Astronomy / Energetic Particles, [7807] Space Plasma Physics / Charged Particle Motion And Acceleration, [7851] Space Plasma Physics / Shock Waves

Scientific paper

Many high energy solar energetic particles (SEPs), potentially threatening astronauts and instruments on space missions, are considered to be accelerated by CME-driven shocks in interplanetary space. So that it is important to know the mechanisms of space energetic particles transport with acceleration of CME-driven shocks. But they still remain a puzzle for decades. For simplicity purpose, usually a black-box model is used to treat shock acceleration as a black box, i.e., a moving source of energetic particles. In this talk, we present an extension of black-box model to include the effects of perpendicular diffusion and magnetic field models of CMEs. Based on a numerical solution of the SEP transport equation with the extended black-box model, we get intensity and anisotropy time profiles of shock accelerated particles propagating in 3-dimensional interplanetary magnetic field. In addition, we will compare our numerical results with spacecraft observations in order to better understand SEPs acceleration by interplanetary shocks.

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