The FRB-searching Pipeline of the Tianlai Cylinder Pathfinder Array

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外文摘要：This paper presents the design,calibration,and survey strategy of the Fast Radio Burst(FRB)digital backend and its real-time data processing pipeline employed in the Tianlai Cylinder Pathfinder Array.The array,consisting of three parallel cylindrical reflectors and equipped with 96 dual-polarization feeds,is a radio interferometer array designed for conducting drift scans of the northern celestial semi-sphere.The FRB digital backend enables the formation of 96 digital beams,effectively covering an area of approximately 40 square degrees with the 3 dB beam.Our pipeline demonstrates the capability to conduct an automatic search of FRBs,detecting at quasi-real-time and classifying FRB candidates automatically.The current FRB searching pipeline has an overall recall rate of 88％.During the commissioning phase,we successfully detected signals emitted by four well-known pulsars:PSR B0329+54,B2021+51,B0823+26,and B2020+28.We report the first discovery of an FRB by our array,designated as FRB 20220414A.We also investigate the optimal arrangement for the digitally formed beams to achieve maximum detection rate by numerical simulation.

外文关键词：

instrumentation:interferometersmethods:data analysis(stars:)pulsars:generaltelescopes

作者：

Zijie Yu、Furen Deng、Shijie Sun、Chenhui Niu、Jixia Li、Fengquan Wu、Wei-Yang Wang、Yougang Wang、Shifan Zuo、Lin Shu、Jie Hao、Xiaohui Liu、Reza Ansari、Ue-Li Pen、Albert Stebbins、Peter Timbie、Xuelei Chen

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作者单位：

National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

University of Chinese Academy of Sciences,Beijing 100049,China

Key Laboratory of Radio Astronomy and Technology,Chinese Academy of Science,Beijing 100101,China

Institute of Astrophysics,Central China Normal University,Wuhan 430079,China

Institute of Automation,Chinese Academy of Sciences,Beijing 100190,China

Guangdong Institute of Artificial Intelligence and Advanced Computing,Guangzhou 510535,China

Université Paris—Saclay,CNRS/IN2P3,IJCLab,91405 Orsay,France

Institute of Astronomy and Astrophysics,Academia Sinica,Roosevelt Road,Taipei 10617,Taiwan,China

Canadian Institute for Theoretical Astrophysics,University of Toronto,60 Saint George Street,Toronto,ON M5S 3H8,Canada

Department of Physics,University of Wisconsin—Madison,Madison,WI 53706,USA

Fermi National Accelerator Laboratory,P.O.Box 500,Batavia IL 60510-5011,USA

Department of Physics,College of Sciences,Northeastern University,Shenyang 110819,China

Center of High Energy Physics,Peking University,Beijing 100871,China

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基金：

Repair and Procurement Grant of the Chinese Academy of ScienceNational SKA program of ChinaNational SKA program of ChinaNational Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)

项目编号：

2022SKA01101002022SKA01101011236114814122030611227307012303004

出版年：

2024

DOI：

10.1088/1674-4527/ad5b35

天文和天体物理学研究

中国科学院国家天文台

天文和天体物理学研究

CSTPCD

影响因子：0.406

ISSN：1674-4527

年,卷(期)：2024.24(8)