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Particle acceleration by magnetic reconnection in geospace
Mitsuo Oka, Joachim Birn, Jan Egedal +7
Particles are accelerated to very high, non-thermal energies during explosive energy-release phenomena in space, solar, and astrophysical plasma environments. While it has been est…
Major Scientific Challenges and Opportunities in Understanding Magnetic Reconnection and Related Explosive Phenomena in Solar and Heliospheric Plasmas
H. Ji, J. Karpen, A. Alt +105
Magnetic reconnection underlies many explosive phenomena in the heliosphere and in laboratory plasmas. The new research capabilities in theory/simulations, observations, and labora…
PIC simulations of microinstabilities and waves at near-Sun solar wind perpendicular shocks: Predictions for Parker Solar Probe and Solar Orbiter
Zhongwei Yang, Ying D. Liu, Shuichi Matsukiyo +6
Microinstabilities and waves excited at moderate-Mach-number perpendicular shocks in the near-Sun solar wind are investigated by full particle-in-cell (PIC) simulations. By analyzi…
Heating of Heavy Ions in Low-beta Compressible Turbulence
Xiangrong Fu, Fan Guo, Hui Li +1
Enhancement of minor ions such as He and heavy ions in flare-associated solar energetic particle (SEP) events remains one of the major puzzles in heliophysics. In this work, we…
Parametric Decay Instability and Dissipation of Low-frequency Alfvén Waves in Low-beta Turbulent Plasmas
Xiangrong Fu, Hui Li, Fan Guo +2
Evolution of the parametric decay instability (PDI) of a circularly polarized Aflvén wave in a turbulent low-beta plasma background is investigated using 3D hybrid simulations. It…
A solar type II radio burst from CME-coronal ray interaction: simultaneous radio and EUV imaging
Yao Chen, Guohui Du, Li Feng +5
Simultaneous radio and extreme ultraviolet (EUV)/white-light imaging data are examined for a solar type II radio burst occurring on 2010 March 18 to deduce its source location. Usi…
The Acceleration of Electrons at Perpendicular Shocks and its Implication for Solar Energetic Particle events
Fan Guo, Joe Giacalone
We present a study of the acceleration of electrons at a perpendicular shock that propagates through a turbulent magnetic field. The energization process of electrons is investigat…