Abstract
The wave emission process of solar Type II radio bursts associated with Coronal Mass Ejections (CME) is investigated by using two dimensional, electromagnetic, relativistic ParticleIn-Cell (PIC) code. Two simulation results are shown: the first case is that the CME propagates perpendicular to the local magnetic field, and the second case is that the CME propagates obliquely to the local magnetic field where only the case of the propagation angle of 80 degree is shown. It is shown that fast magnetosonic shock wave is formed with both protons and electrons accelerated by the surfatron acceleration mechanism. It is also shown from the first case that near the shock front the electron Bernstein waves are generated and they can be converted to the extra-ordinary electromagnetic waves (Type II radio bursts) through the direct linear mode conversion. It is found from the second case that near the shock front the electrostatic Langmuir waves (Z-mode) are generated and they can be also converted to the extra-ordinary electromagnetic waves through the direct linear mode conversion.
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