V2EX orbital resonance

Orbital Resonance

定义 Definition

轨道共振:指两个(或多个)天体绕同一中心天体运行时,其公转周期(或平均运动)呈简单整数比(如 2:1、3:2),从而使它们在引力作用下产生周期性、可累积的相互影响,导致轨道元素(如偏心率、倾角)出现稳定锁定或显著变化的现象。常见于行星卫星系统、小行星带与行星之间,以及系外行星系统中。(该术语在更广义的物理语境中也可指“周期匹配导致效应增强”,但天文学用法最常见。)

发音 Pronunciation (IPA)

/rbtl rznns/

例句 Examples

Mercury is close to a 3:2 orbital resonance between its rotation and its orbit.
水星的自转与公转接近 3:2 的轨道共振关系。

The gap structure in the asteroid belt can be explained by orbital resonance with Jupiter, which repeatedly perturbs asteroid orbits over long timescales.
小行星带中的空隙结构可以用与木星的轨道共振来解释:木星在漫长时间尺度上反复扰动小行星轨道,从而逐渐“清空”某些轨道区域。

词源 Etymology

orbital 来自 orbit(轨道),源于拉丁语 orbita(轨迹、车辙、运行的痕迹),与“圆形路径/运路线”的概念相关;resonance 来自拉丁语 resonare(回响、共鸣),在物理学中指系统在特定频率下响应增强。组合成 orbital resonance,字面即“轨道上的共鸣”,强调周期匹配带来的可积累效应。

相关词 Related Words

文学与著作中的用例 Literary Works

  • Solar System Dynamics(Carl D. Murray & Stanley F. Dermott):系统讨论平均运动共振、木星共振与小行星带结构等经典内容。
  • Orbital Motion(A. E. Roy):在轨道力学框架下讲解摄动理论与共振现象。
  • The Exoplanet Handbook(Michael Perryman):在系外行星章节中介绍多行星系统中常见的轨道共振与动力学稳定性。
  • Planetary Sciences(Imke de Pater & Jack J. Lissauer):涵盖太阳系与行星系统演化中轨道共振的作用(如迁移、捕获与轨道激发)。
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