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On the Feasibility of Detecting Satellites of Extrasolar Planets via Microlensing

机译:利用微透镜探测太阳系外行星卫星的可行性

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Although many methods of detecting extrasolar planets have been proposed and successful implementation of some of these methods enabled a rapidly increasing number of exoplanet detections, little has been discussed about the method of detecting satellites around exoplanets. In this paper we test the feasibility of detecting satellites of exoplanets via microlensing. For this purpose, we investigate the effect of satellites in the magnification pattern near the region of the planet-induced perturbations by performing realistic simulations of Galactic bulge microlensing events. From this investigation, we find that although satellites can often cause alterations of magnification patterns, detecting satellite signals in lensing light curves will be very difficult because the signals are seriously smeared out by the severe finite-source effect even for events involved with source stars with small angular radii.
机译:尽管已经提出了许多探测太阳系外行星的方法,并且成功地实现了其中一些方法使得对系外行星的探测迅速增加,但是关于探测系外行星周围卫星的方法的讨论很少。在本文中,我们测试了通过微透镜检测系外行星卫星的可行性。为此,我们通过对银河膨胀微透镜事件进行现实模拟来研究卫星在行星引起的扰动区域附近的放大模式中的卫星效应。从这项调查中,我们发现尽管卫星通常会导致放大倍数的变化,但要检测透镜光曲线中的卫星信号将非常困难,因为即使受到与恒星相关的事件的影响,信号也会受到严重的有限源效应的严重抹去。小角度半径。

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