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arXiv 0908.2073astro-ph.EP
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太阳风与流星体动力学

Solar wind and dynamics of meteoroid

J. Klacka

摘要:

研究了太阳风对尘埃粒子-流星体的影响。还考虑了粒子的旋转。详细推导了系统的运动方程和欧拉动力学方程。考虑了太阳风作用的最简单形式,导出的运动方程对于非旋转球形粒子可归结为“伪坡印廷-罗伯逊效应”。最终的运动方程中还含有角速度项,它可能会引起流星体轨道平面的变化。通过对欧拉动力学方程的分析表明,流星体的旋转轴随时间变化,对于球形粒子来说,不存在旋转轴方向的平衡态。

英文摘要:

The effect of solar wind on dust particle, meteoroid, is investigated. Rotation of the particle is also considered. Detail derivations of both equation of motion and Euler's dynamical equations, are presented. The most simple form of the action of the solar wind is considered and the derived equation of motion reduces to "pseudo-Poynting-Robertson effect" for non-rotating spherical particle. The final equation of motion contains also angular velocity term and it may cause change of orbital plane of the meteoroid. Analysis of the Euler's dynamical equations shows that rotational axis of the meteoroid changes in time and equilibrium state for the orientation of the axis of rotation does not exist for spherical particle.

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