Design and Application of an S-band Fast Radio Bursts Search Pipeline for the Nanshan 26 m Radio Telescope

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外文摘要：Fast radio bursts(FRBs)are among the most studied radio transients in astrophysics,but their ongin and radiation mechanism are still unknown.It is a challenge to search for FRB events in a huge amount of observational data with high speed and high accuracy.With the rapid advancement of the FRB research process,FRB searching has changed from archive data mining to either long-term monitoring of the repeating FRBs or all-sky surveys with specialized equipments.Therefore,establishing a highly efficient and high quality FRB search pipeline is the primary task in FRB research.Deep learning techniques provide new ideas for FRB search processing.We have detected radio bursts from FRB 20201124A in the L-band observational data of the Nanshan 26 m radio telescope(NSRT-26m)using the constructed deep learning based search pipeline named dispersed dynamic spectra search(DDSS).Afterwards,we further retrained the deep learning model and applied the DDSS framework to S-band observations.In this paper,we present the FRB observation system and search pipeline using the S-band receiver.We carried out search experiments,and successfully detected the radio bursts from the magnetar SGR J1935+2145 and FRB 20220912A.The experimental results show that the search pipeline can complete the search efficiently and output the search results with high accuracy.

外文关键词：

radio continuum:generalmethods:data analysismethods:observational

作者：

Yan-Ling Liu、Mao-Zheng Chen、Jian Li、Jian-Ping Yuan、Rai Yuen、Zhi-Yong Liu、Hao Yan、Wen-Long Du、Nan-Nan Zhai

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作者单位：

Xinjiang Astronomical Observatory,Chinese Academy of Sciences,Urumqi 830011,China

Xinjiang Key Laboratory of Microwave Technology,Urumqi 830011,China

University of Chinese Academy of Sciences,Beijing 100049,China

基金：

Chinese Academy of Sciences(CAS)"Light of West China"ProgramNational Natural Science Foundation of China(NSFC)Operation,Maintenance and Upgrading Fund for Astronomical Telescopes and Facility InstrumentsMinistry of Finance(MOF)of ChinaChinese Academy of Sciences(CAS)

项目编号：

2022-XBQNXZ-01511903071

出版年：

2024

DOI：

10.1088/1674-4527/ad52c5

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(7)