The Motion of Solar Wind Charged Particle in a Sinusoidal Vibrating Magnetic Field

Abstract: The motion of solar wind charged particle in a small perturbed magnetic field lines of magnitude B1 is derived through a perturbed Lorentz force. By introducing a small sinusoidal velocity perturbation  v1 in transverse direction to the original velocity field vo, a small perturbed magnetic field is resulted from the original magnetic field of magnitude B0. A system of simultaneous differential equations describing the perturbed Lorentz force in Cartesian coordinates is obtained. These equations, denoted as RESY, are then treated numerically to follow qualitatively the behaviour of the charge motion locally. The squared space velocity resulted from RESY are twice to three times larger than the initial velocity squared in the case of constant magnetic field. Here the initial velocity was normalized to unity,whereas its value may be estimated from the well-known Parker exponentially increased solar-wind velocity. Vibrating magnetic fields might be one candidate to explain the observed very high velocities for some solar wind particles.
Keywords: Solar physics: Solar wind, Vibrating magnetic fields 
Author: Iratius Radiman, Endang Soegiartini, Emanuel Sungging, Yayan Soegianto
Journal Code: jpfisikagg070001

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