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arXiv 0901.3279astro-ph.EP
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关于热行星上的热潮汐

Concerning thermal tides on hot Jupiters

Jeremy Goodman

摘要:

通过类比戈尔德和索特提出的解释金星逆行的机制,阿拉斯和苏格拉底认为热潮汐可能会激发热木星系外行星进入非同步旋转,也许也是非圆形轨道。结果表明,由于类木行星对流核上方没有固体表面,引力潮汐和热潮汐的耦合在大气尺度高度与行星半径的比值中消失到零阶。在下一个订单,效果可能有相反的符号,由后者的作者声称,因此加强同步和圆形轨道。

英文摘要:

By analogy with a mechanism proposed by Gold and Soter to explain the retrograde rotation of Venus, Arras and Socrates suggest that thermal tides may excite hot jovian exoplanets into nonsynchronous rotation, and perhaps also noncircular orbits. It is shown here that because of the absence of a solid surface above the convective core of a jovian planet, the coupling of the gravitational and thermal tides vanishes to zeroth order in the ratio of the atmospheric scale height to the planetary radius. At the next order, the effect probably has the sign opposite to that claimed by the latter authors, hence reinforcing synchronous and circular orbits.

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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