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arXiv 1009.4381astro-ph.IM
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直接探测系外行星用动态全息图模拟日冕

Simulations of coronagraphy with a dynamic hologram for the direct detection of exo-planets

Davide Ricci, Hervé Le Coroller, Antoine Labeyrie, Pierre Piron

摘要:

在以前的论文中,我们讨论了一个原始的解决方案,以提高性能的日冕仪添加,在光学方案中,自适应全息图去除大部分的残留散斑星光。在我们的模拟中,主恒星和非常近的行星(5 λ/D)之间的通量比的检测极限提高了1000倍以上(分别为1000倍)。10000),当配备有用于λ/20的波前颠簸缺陷的情况的全息图时(分别λ/100)。我们推导出,在本文中,所需的全息像素,以实现这些目标的传输精度。我们表明,可以在现有技术的基础上进行初步测试。

英文摘要:

In a previous paper, we discussed an original solution to improve the performances of coronagraphs by adding, in the optical scheme, an adaptive hologram removing most of the residual speckle starlight. In our simulations, the detection limit in the flux ratio between a host star and a very near planet (5 lambda/D) improves over a factor 1000 (resp. 10000) when equipped with a hologram for cases of wavefront bumpiness imperfections of lambda/20 (resp. lambda/100). We derive, in this paper, the transmission accuracy required on the hologram pixels to achieve such goals. We show that preliminary tests could be performed on the basis of existing technologies.

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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