电子倍增电荷耦合器件的统计学
Statistics of electron-multiplying charge-coupled devices
AI总结：
本文研究了EMCCD在空间低表面亮度紫外天文观测中的统计学特性，推导了光子计数信噪比、最佳曝光时间及放大过程分布，并给出了预期压缩率公式。
摘要：
EMCCD是用于空间低表面亮度紫外天文学的高效成像设备。其大倍率允许进行光子计数，即区分事件与非事件的检测。本文提供了观测过程、光子计数过程、放大过程和压缩过程的统计学分析。光子计数的信噪比表达式以多重伽马函数的形式给出。最佳曝光时间是时钟诱导电荷的函数。放大过程的精确分布是一个易于计算的幂矩阵。用于与读出噪声比较的最佳截断值是读出噪声的强函数，以及电子倍增增益和光子速率的弱函数。一个公式给出了预期的压缩率。
英文摘要：
EMCCDs are efficient imaging devices for low surface brightness UV astronomy from space. The large amplification allows photon counting, the detection of events versus non-events. This paper provides the statistics of the observation process, the photon-counting process, the amplification, process, and the compression. The expression for the signal-to-noise of photon counting is written in terms of the polygamma function. The optimal exposure time is a function of the clock-induced charge. The exact distribution of amplification process is a simple-to-compute powered matrix. The optimal cutoff for comparing to the read noise is close to a strong function of the read noise and a weak function of the electron-multiplying gain and photon rate. A formula gives the expected compression rate.
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。
