• ISSN 2097-1893
  • CN 10-1855/P
赖海容,贾英东,何建森. 2021. 行星际尘埃的探测与研究进展. 地球与行星物理论评,52(5):507-517. doi: 10.19975/j.dqyxx.2021-029
引用本文: 赖海容,贾英东,何建森. 2021. 行星际尘埃的探测与研究进展. 地球与行星物理论评,52(5):507-517. doi: 10.19975/j.dqyxx.2021-029
Lai H R, Jia Y D, He J S. 2021. Advances in observation and theory of interplanetary dust. Reviews of Geophysics and Planetary Physics, 52(5): 507-517. doi: 10.19975/j.dqyxx.2021-029
Citation: Lai H R, Jia Y D, He J S. 2021. Advances in observation and theory of interplanetary dust. Reviews of Geophysics and Planetary Physics, 52(5): 507-517. doi: 10.19975/j.dqyxx.2021-029

行星际尘埃的探测与研究进展

Advances in observation and theory of interplanetary dust

  • 摘要: 行星际尘埃遍布太阳系中,是太阳系物质的主要组成部分之一,主要来自太阳系小天体(如彗星和小行星)的物质剥离损失,因此对其探测有助于了解太阳系小天体的起源与演化. 它们在行星际空间因太阳风等离子体的碰撞以及太阳辐射电离而带电,因而会影响周围的等离子体. 行星际尘埃诞生后在万有引力、光压、玻印廷—罗伯逊作用以及洛伦兹力的作用下被加速. 由于行星际尘埃的尺寸分布较广,对它们的探测始终是行星际观测的一个挑战. 同理,行星际尘埃的动力学横跨数十量级的空间尺度,包括单粒子动力学到尘埃等离子体的各种过程. 本文着重讨论尘埃颗粒个体的不同带电机制以及受力情况分析,简要介绍尘埃等离子体的相关研究以及近期帕克太阳探针在内日球层关于行星际尘埃探测的一些进展成果.

     

    Abstract: Interplanetary dust is solid ejecta from various celestial bodies (e.g., comets and asteroids). They are ubiquitous in the solar system, and serve as one of the main constituents of the solar system. The exploration of interplanetary dust is helpful for understanding the origin and evolution of small bodies in the solar system. Solar wind plasma and solar ultraviolet radiation charge these dust particles, revealing them to the solar wind. The particles are thus subject to gravity, radiation pressure, electromagnetic forces, and the Poynting-Robertson effect. Detection of such particles has been a challenge to the space science community, because of the wide range distribution of particle sizes. For the same reason, the dynamics of interplanetary dust studies both single particle kinetics on sub-micrometer scale and collective effects on millions of kilometer scale. This review lists the processes to determine the charge state and dynamics of the interplanetary dust, introduces the dynamics of dusty plasmas, and presents some research highlights based on the Parker Solar Probe measurements in the inner heliosphere.

     

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