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Searching for Fast Optical Transients using VERITAS Cherenkov Telescopes

机译：使用VERITAS Cherenkov望远镜搜索快速光学瞬变

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Astronomical transients are intrinsically interesting things to study. Fast optical transients (microsecond timescale) are a largely unexplored field of optical astronomy mainly due to the fact that large optical telescopes are oversubscribed. Furthermore, most optical observations use instruments with integration times on the order of seconds and are thus unable to resolve fast transients. Current-generation atmospheric Cherenkov gamma-ray telescopes, however, have huge collecting areas (e.g., VERITAS, which consists of four 12-m telescopes), larger than any existing optical telescopes, and time is typically available for such studies without interfering with gamma-ray observations. The following outlines the benefits of using a Cherenkov telescope to detect optical transients and the implementation of the VERITAS Transient Detector (VTD), a dedicated multi-channel photometer based on field-programmable gate arrays. Data are presented demonstrating the ability of the VTD to detect transient events such as a star passing through its field of view and the optical light curve of a pulsar.
机译：天文学瞬态是本质上值得研究的东西。快速光学瞬变（微秒级）是光学天文学的一个主要未开发领域，这主要是由于大型光学望远镜的超额订购。此外，大多数光学观测所使用的仪器的积分时间约为秒，因此无法解决快速瞬变问题。但是，当前的大气Cherenkov伽玛射线望远镜具有巨大的采集面积（例如，VERITAS，它由四个12米望远镜组成），比任何现有的光学望远镜都要大，并且通常可以在不干扰伽玛射线的情况下进行此类研究射线观察。以下概述了使用Cherenkov望远镜检测光学瞬变的好处以及VERITAS瞬态检测器（VTD）的实现，VERITAS瞬态检测器是一种基于现场可编程门阵列的专用多通道光度计。呈现的数据证明了VTD检测瞬态事件的能力，例如恒星穿过其视场和脉冲星的光学曲线。

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