利用切伦科夫望远镜阵列作为光强干涉仪实现微弧秒空间分辨率
Towards micro-arcsecond spatial resolution with Air Cherenkov Telescope arrays as optical intensity interferometers
摘要：
在这张海报中，我们强调了成像空气切伦科夫望远镜（IACT）阵列和强度干涉仪之间的等效性，以满足一系列技术要求。我们触及迈克尔逊和强度干涉仪之间的差异，并简要概述了当前的IACT阵列，其升级和下一代概念（CTA，AGIS，2015年完成）。后者预计包括30-90台望远镜，将提供400-4000条长度在50米到1公里之间的不同基线。用这种望远镜阵列进行的强度干涉测量，对于~8.5的极限V星等，可达到50微弧秒的分辨率。这项技术开辟了广泛的研究的可能性，除其他外，探测恒星表面活动和动态AU尺度的恒星在各个关键的演化阶段的星周环境。在这里，我们讨论使用IACT阵列作为光强度干涉仪的可能性。
英文摘要：
In this poster contribution we highlight the equivalence between an Imaging Air Cherenkov Telescope (IACT) array and an Intensity Interferometer for a range of technical requirements. We touch on the differences between a Michelson and an Intensity Interferometer and give a brief overview of the current IACT arrays, their upgrades and next generation concepts (CTA, AGIS, completion 2015). The latter are foreseen to include 30-90 telescopes that will provide 400-4000 different baselines that range in length between 50m and a kilometre. Intensity interferometry with such arrays of telescopes attains 50 micro-arcseconds resolution for a limiting V magnitude of ~8.5. This technique opens the possibility of a wide range of studies, amongst others, probing the stellar surface activity and the dynamic AU scale circumstellar environment of stars in various crucial evolutionary stages. Here we discuss possibilities for using IACT arrays as optical Intensity Interferometers.
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