arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1904.01239astro-ph.IMastro-ph.EP
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用FAST探测系外行星?

Detecting exoplanets with FAST?

Philippe Zarka, Di Li, Jean-Mathias Grießmeier, Laurent Lamy, Julien N. Girard, Sébastien L. G. Hess, T. Joseph W. Lazio, Gregg Hallinan

摘要:

我们简要回顾了各种可能导致非热无线电辐射的外行星系统(行星磁层,磁层电离层和磁层卫星耦合,恒星行星相互作用),并从他们的检测可以得出的物理信息。后一种情况特别有利于产生70MHz以上的无线电发射。我们总结了过去和最近的无线电搜索的结果,然后讨论FAST的特点和观测策略,包括协同作用。我们强调偏振测量的重要性和高占空比的非常弱的目标,无线电系外行星证明。

英文摘要:

We briefly review the various proposed scenarios that may lead to nonthermal radio emissions from exoplanetary systems (planetary magnetospheres, magnetosphere-ionosphere and magnetosphere-satellite coupling, and star-planet interactions), and the physical information that can be drawn from their detection. The latter scenario is especially favorable to the production of radio emission above 70\,MHz. We summarize the results of past and recent radio searches, and then discuss FAST characteristics and observation strategy, including synergies. We emphasize the importance of polarization measurements and a high duty-cycle for the very weak targets that radio-exoplanets prove to be.

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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