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arXiv 2103.06186astro-ph.EP
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木星的动态爱数

Jupiter's Dynamical Love Number

Dong Lai

摘要:

最近由{ \it Juno}航天器进行的观测表明,木星的潮汐勒夫数$k_2$低于流体静力学值$4\%$。我们提出了一个简单的计算木星的动力学爱数,解释了观察到的“异常”。勒夫数通常由行星的(旋转修正的)f模的响应决定。我们的方法还允许高效率的计算高阶动态的爱数。虽然惯性模式对勒夫数的贡献可以忽略不计,但在行星内部的大范围内足够强的分层会引起显着的g模式响应,并影响测量的勒夫数。

英文摘要:

Recent observations by the {\it Juno} spacecraft have revealed that the tidal Love number $k_2$ of Jupiter is $4\%$ lower than the hydrostatic value. We present a simple calculation of the dynamical Love number of Jupiter that explains the observed "anomaly". The Love number is usually dominated by the response of the (rotation-modified) f-modes of the planet. Our method also allows for efficient computation of high-order dynamical Love numbers. While the inertial-mode contributions to the Love numbers are negligible, a sufficiently strong stratification in a large region of the planet's interior would induce significant g-mode responses and influence the measured Love numbers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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