The Breakthrough Listen Search for Intelligent Life: Observations of 1327 Nearby Stars Over 1.10–3.45 GHz
The Breakthrough Listen Search for Intelligent Life: Observations of 1327 Nearby Stars Over 1.10–3.45 GHz
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对智能生命的突破性聆听搜索：对 1.10-3.45 GHz 附近 1327 颗恒星的观测
DOI：
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发表时间：
2019
影响因子：
5.3
通讯作者：
S. P. Worden
中科院分区：
文献类型：
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作者：
D. Price;D. Price;J. E. Enriquez;J. E. Enriquez;Bryan Brzycki;S. Croft;Daniel J. Czech;D. DeBoer;J. DeMarines;Griffin Foster;Griffin Foster;V. Gajjar;N. Gizani;N. Gizani;G. Hellbourg;H. Isaacson;H. Isaacson;B. Lacki;M. Lebofsky;D. MacMahon;I. Pater;A. Siemion;D. Werthimer;J. Green;J. Kaczmarek;R. Maddalena;S. Mader;J. Drew;S. P. Worden
“突破聆听”（BL）是一项为期10年的计划，旨在通过对当地宇宙的无线电和光学观测，寻找地球以外有技术能力的生命的特征。BL计划的核心部分是在无线电波长（1-10 GHz）上对1702颗附近恒星进行全面调查。在这里，我们报告了澳大利亚新南威尔士州的64米CSIRO帕克斯射电望远镜和美国西弗吉尼亚州的100米罗伯特C.伯德格林班克射电望远镜的观测结果。在2016年1月至2019年3月期间，使用1.10-1.90 GHz和1.80-2.80 GHz接收器在Green Bank观测了1138颗恒星的样本，并使用帕克斯望远镜在2.60-3.45 GHz波段观测了189颗恒星。我们搜索了这些数据中存在的多普勒加速度漂移率在±4 Hz s−1之间的工程信号。在这里，我们将详细介绍我们的数据分析技术，并提供检测到的事件示例。在排除了具有与地面无线电干扰一致特征的事件后，我们没有任何候选事件。也就是说，我们在Green Bank和Parkes的观测中分别没有发现在W和W以上假定的无线电发射机的证据。这些观测构成了迄今为止在1.10-3.45 GHz范围内对技术特征进行的最全面的搜索。所有数据产品，总计约219 TB，可作为第一次BL数据发布（DR1）的一部分下载，如配套论文所述。
Breakthrough Listen (BL) is a 10 year initiative to search for signatures of technologically capable life beyond Earth via radio and optical observations of the local universe. A core part of the BL program is a comprehensive survey of 1702 nearby stars at radio wavelengths (1–10 GHz). Here, we report on observations with the 64 m CSIRO Parkes radio telescope in New South Wales, Australia, and the 100 m Robert C. Byrd Green Bank radio telescope in West Virginia, USA. Over 2016 January to 2019 March, a sample of 1138 stars was observed at Green Bank using the 1.10–1.90 GHz and 1.80–2.80 GHz receivers, and 189 stars were observed with Parkes over 2.60–3.45 GHz. We searched these data for the presence of engineered signals with Doppler-acceleration drift rates between ±4 Hz s−1. Here, we detail our data analysis techniques and provide examples of detected events. After excluding events with characteristics consistent with terrestrial radio interference, we are left with zero candidates. That is, we find no evidence of putative radio transmitters above W, and W for Green Bank and Parkes observations, respectively. These observations constitute the most comprehensive search over 1.10–3.45 GHz for technosignatures to date. All data products, totaling ∼219 TB, are available for download as part of the first BL data release (DR1), as described in a companion paper.
DOI：
10.1088/1538-3873/aa80d2
发表时间：
2018-04-01
影响因子：
3.5
作者：
MacMahon, David H. E.;Price, Danny C.;Woody, Dave
通讯作者：
Woody, Dave