First SETI Observations with China’s Five-hundred-meter Aperture Spherical Radio Telescope (FAST)

doi:10.3847/1538-4357/ab7376

NAOC Open IR

	First SETI Observations with China’s Five-hundred-meter Aperture Spherical Radio Telescope (FAST)
	Zhang,Zhi-Song 1,2,3,4; Werthimer,Dan 3,4; Zhang,Tong-Jie 5; Cobb,Jeff 3,4; Korpela,Eric 3; Anderson,David 3; Gajjar,Vishal 3,4; Lee,Ryan 4,6,7; Li,Shi-Yu 5; Pei,Xin 2,8; Zhang,Xin-Xin 1; Huang,Shi-Jie 1; Wang,Pei1 ; Zhu,Yan 1; Duan,Ran1 ; Zhang,Hai-Yan 1; Jin,Cheng-jin 1; Zhu,Li-Chun 1; Li,Di1,2,9
	2020-03-10
Source Publication	The Astrophysical Journal
ISSN	0004-637X
Volume	891 Issue:2
Abstract	Abstract The Search for Extraterrestrial Intelligence (SETI) attempts to address the possibility of the presence of technological civilizations beyond the Earth. Benefiting from high sensitivity, large sky coverage, and an innovative feed cabin for China’s Five-hundred-meter Aperture Spherical radio Telescope (FAST), we performed SETI’s first observations with FAST’s newly commissioned 19 beam receiver; we report preliminary results in this paper. Using the data stream produced by the SERENDIP VI real-time multibeam SETI spectrometer installed at FAST, as well as its off-line data processing pipelines, we identify and remove four kinds of radio frequency interference (RFI): zone, broadband, multibeam, and drifting, utilizing the Nebula SETI software pipeline combined with machine-learning algorithms. After RFI mitigation, the Nebula pipeline identifies and ranks interesting narrowband candidate ET signals, scoring candidates by the number of times candidate signals have been seen at roughly the same sky position and same frequency, signal strength, proximity to a nearby star or object of interest, along with several other scoring criteria. We show four example candidate groups that demonstrate this RFI mitigation and candidate selection. This preliminary testing on FAST data helps to validate our SETI instrumentation techniques as well as our data processing pipeline.
Keyword	Astrobiology Sky surveys Astronomical instrumentation
DOI	10.3847/1538-4357/ab7376
Language	英语
WOS ID	IOP:0004-637X-891-2-ab7376
Publisher	The American Astronomical Society
Citation statistics
Document Type	期刊论文
Identifier	http://ir.bao.ac.cn/handle/114a11/64385
Collection	中国科学院国家天文台
Affiliation	1.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China 2.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 3.Space Sciences Laboratory, University of California Berkeley, Berkeley, CA 94720, USA 4.Department of Astronomy, University of California Berkeley, Berkeley, CA 94720, USA 5.Department of Astronomy, Beijing Normal University, Beijing 100875, People's Republic of China 6.Department of Physics, University of California Berkeley, Berkeley, CA 94720, USA 7.Department of Computer Science, University of California Berkeley, Berkeley, CA 94720, USA 8.Xinjiang Astronomical Observatory, CAS, 150, Science 1-Street, Urumqi, Xinjiang 830011, People's Republic of China 9.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China
First Author Affilication	National Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation GB/T 7714	Zhang,Zhi-Song,Werthimer,Dan,Zhang,Tong-Jie,等. First SETI Observations with China’s Five-hundred-meter Aperture Spherical Radio Telescope (FAST)[J]. The Astrophysical Journal,2020,891(2).
APA	Zhang,Zhi-Song.,Werthimer,Dan.,Zhang,Tong-Jie.,Cobb,Jeff.,Korpela,Eric.,...&Li,Di.(2020).First SETI Observations with China’s Five-hundred-meter Aperture Spherical Radio Telescope (FAST).The Astrophysical Journal,891(2).
MLA	Zhang,Zhi-Song,et al."First SETI Observations with China’s Five-hundred-meter Aperture Spherical Radio Telescope (FAST)".The Astrophysical Journal 891.2(2020).

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