SETI Observations of Exoplanets with the Allen Telescope Array
G. R. Harp, Jon Richards, Jill C. Tarter, John Dreher, Jane Jordan, Seth Shostak, Ken Smolek, Tom Kilsdonk, Bethany R. Wilcox, M. K. R. Wimberly, John Ross, W. … 展开作者
G. R. Harp, Jon Richards, Jill C. Tarter, John Dreher, Jane Jordan, Seth Shostak, Ken Smolek, Tom Kilsdonk, Bethany R. Wilcox, M. K. R. Wimberly, John Ross, W. C. Barott, R. F. Ackermann, Samantha Blair
备注：
225 pages including very long table, 9 figures, 7 tables, resubmitted to Astrophysical Journal
我们报告了使用艾伦望远镜阵列（ATA）对大量已知系外行星和其他邻近恒星系统的无线电SETI观测。从2009年5月到2015年12月，进行了大约19000小时的观测。这次搜索的重点是来自总共9293颗恒星的窄带无线电信号，其中包括2015颗系外行星恒星和开普勒感兴趣的天体，以及另外65颗行星可能靠近其宜居带的天体。ATA观测是使用多个合成波束和反符合滤波器进行的，以帮助识别地面无线电干扰。在避开强地面通信频率的多个波段的1- 9千兆赫频率上观测恒星。对于窄带（0.7 ~ 100 Hz）连续信号和脉冲信号，发射器/接收器的相对加速度为-0.3 ~0.3 m/s^2，对数据进行了近实时处理。在超过8 x 10^6星兆赫兹的观测中，总共检测到1.9 x 10^8个需要立即随访的独特信号。我们没有探测到来自地外技术的持续信号超过我们的频率敏感度阈值180 ~ 310 x 10^-26 W / m^2。
英文摘要：
We report radio SETI observations on a large number of known exoplanets and other nearby star systems using the Allen Telescope Array (ATA). Observations were made over about 19000 hours from May 2009 to Dec 2015. This search focused on narrow-band radio signals from a set totaling 9293 stars, including 2015 exoplanet stars and Kepler objects of interest and an additional 65 whose planets may be close to their Habitable Zone. The ATA observations were made using multiple synthesized beams and an anticoincidence filter to help identify terrestrial radio interference. Stars were observed over frequencies from 1- 9 GHz in multiple bands that avoid strong terrestrial communication frequencies. Data were processed in near-real time for narrow-band (0.7- 100 Hz) continuous and pulsed signals, with transmitter/receiver relative accelerations from -0.3 to 0.3 m/s^2. A total of 1.9 x 10^8 unique signals requiring immediate follow-up were detected in observations covering more than 8 x 10^6 star-MHz. We detected no persistent signals from extraterrestrial technology exceeding our frequency-dependent sensitivity threshold of 180 - 310 x 10^-26 W / m^2.
A Deep SETI Search for Technosignatures in the TRAPPIST-1 System with FAST
College of Computer and Information Engineering, Dezhou University（德州学院计算机与信息工程学院）；Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University（北京师范大学天文与前沿科学研究院）；School of Mathematics and Big Data, Dezhou University（德州学院数学与大数据学院）；School of Physics and Astronomy, Beijing Normal University（北京师范大学物理与天文学院）；Institute for Astronomical Science, Dezhou University（德州学院天体科学学院）
A Search for Radio Technosignatures from Interstellar Object 3I/ATLAS with the Allen Telescope Array
SETI Institute（SETI研究所）；Berkeley SETI Research Center（伯克利SETI研究中心）；Furman University（福尔曼大学）；Breakthrough Listen, University of California, Berkeley（加州大学伯克利分校突破聆听计划）；University of Oxford（牛津大学）；Department of Astronomy and the DiRAC Institute, University of Washington（华盛顿大学天文学系及DiRAC研究所）；University of Central Arkansas（阿肯色中央大学）
