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arXiv 1407.2617astro-ph.IM
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近红外SETI实验:仪器概述

A near-infrared SETI experiment: instrument overview

Shelley A. Wright, Dan Werthimer, Richard R. Treffers, Jerome Maire, Geoffrey W. Marcy, Remington P. S. Stone, Frank Drake, Elliot Meyer, Patrick Dorval, Andrew Siemion

摘要:

我们正在设计和建造一个新的SETI(搜寻地外文明)仪器,通过近红外波长的脉冲激光信号寻找星际通信的直接证据。新的仪器设计建立在我们过去的光学SETI经验基础上,是迈向新的、更通用和复杂的一代非常快速的光学和近红外脉冲搜索设备的第一步。我们提出了我们的仪器设计,给出了一个概述的光学机械设计,探测器的选择和表征,信号处理,和集成程序。该项目利用近红外(950-1650 nm)离散放大雪崩光电二极管(APD),具有大于1 GHz的带宽,低噪声特性和中等增益(~10^4)。我们已经研究了在我们的仪器中使用单个检测器与多个检测器的对比(参见Maire等人,这次会议),并已优化了系统,使其具有高灵敏度和低假符合率。我们的设计经过优化,可在1米望远镜后面使用,并包括一个用于采集和引导的光学相机。我们的目标是使我们的仪器相对经济,易于复制。我们描述了我们的观测设置和我们的SETI目标的初步搜索策略,并为潜在的有趣的紧凑的天体物理对象。

英文摘要:

We are designing and constructing a new SETI (Search for Extraterrestrial Intelligence) instrument to search for direct evidence of interstellar communications via pulsed laser signals at near-infrared wavelengths. The new instrument design builds upon our past optical SETI experiences, and is the first step toward a new, more versatile and sophisticated generation of very fast optical and near-infrared pulse search devices. We present our instrumental design by giving an overview of the opto-mechanical design, detector selection and characterization, signal processing, and integration procedure. This project makes use of near-infrared (950-1650 nm) discrete amplification Avalanche Photodiodes (APD) that have greater than 1 GHz bandwidths with low noise characteristics and moderate gain (~10^4). We have investigated the use of single versus multiple detectors in our instrument (see Maire et al., this conference), and have optimized the system to have both high sensitivity and low false coincidence rates. Our design is optimized for use behind a 1m telescope and includes an optical camera for acquisition and guiding. A goal is to make our instrument relatively economical and easy to duplicate. We describe our observational setup and our initial search strategies for SETI targets, and for potential interesting compact astrophysical objects.

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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