Institutional Repository of Radio Astronomy Research Laboratory
| An Overview of FAST Real-time Fast Radio Burst Searching System | |
Zhang, X. X.1,2; Duan, R.1; Gajjar, V.3; Zhang, H. Y.1,4; Wang, P.1; Niu, C. H.1; Werthimer, D.3,5; Cobb, J.3,5; Li, S. Y.6; Pei, X.7 ; Zhu, Y.1; Li, D.1,2,8
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| 2023-09-01 | |
| Source Publication | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| ISSN | 1674-4527 |
| Volume | 23Issue:9Pages:095023 |
| Contribution Rank | 7 |
| Abstract | In this paper, we report a real-time Fast Radio Burst (FRB) searching system that has been successfully implemented with the 19 beam receiver of the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The relatively small field of view of FAST makes the search for new FRBs challenging, but its high sensitivity significantly improves the accuracy of FRB localization and enables the detection of high-precision neutral hydrogen absorption lines generated by FRBs. Our goal is to develop an FRB searching system capable of real-time detection of FRBs that allows high-time resolution spectro-temporal studies among the repeated bursts, as well as detailed investigations of these bursts and exploration of FRB progenitor models. The data from each beam of the 19-beam receiver are fed into a high-performance computing node server, which performs real-time searches for pulses with a wide dispersion measure (DM) range of 20-10,000 pc cm(-3) with step efficiency of 25% in real time. Then, the head node server aggregates all the candidate signals from each beam within a given time, determining their authenticity based on various criteria, including arrival time, pulse width, signal-to-noise ratio and coincidence patterns among the 19 beams. Within the 1.05-1.45 GHz operating bandwidth of the FAST 19 beam receiver, the system achieves a frequency resolution of 122.07 kHz and a time resolution of 270.336 & mu;s. Subsequently, our team detected a series of bursts with a DM of 566 on 2019 August 30 confirming them as FRB 121102. The FRB searching system enables the 19-beam receiver of FAST to detect repeated/one-off pulses/bursts in real time. |
| Keyword | Astronomical Instrumentation Methods and Techniques instrumentation: spectrographs methods: miscellaneous |
| DOI | 10.1088/1674-4527/ace518 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | FRB 121102 |
| Funding Project | International Partnership Program of the Chinese Academy of Sciences[114A11KYSB20200029] ; National Natural Science Foundation of China (NSFC)[12041301] ; National Key Ramp ; D Program of China[2020YC2201700] |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001051640500001 |
| Publisher | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| Funding Organization | International Partnership Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Key Ramp ; D Program of China |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5387 |
| Collection | 射电天文研究室_数字技术实验室 |
| Corresponding Author | Zhang, X. X.; Duan, R.; Zhang, H. Y. |
| Affiliation | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA 4.Hebei Key Lab Radio Astron Technol, Shijiazhuang 050081, Peoples R China 5.Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA 6.Beijing Acad Sci & Technol, Beijing Planetarium, Beijing 100044, Peoples R China 7.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 8.Univ KwaZulu Natal, NAOC UKZN Comp Astrophys Ctr, ZA-4000 Durban, South Africa |
| Recommended Citation GB/T 7714 | Zhang, X. X.,Duan, R.,Gajjar, V.,et al. An Overview of FAST Real-time Fast Radio Burst Searching System[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2023,23(9):095023. |
| APA | Zhang, X. X..,Duan, R..,Gajjar, V..,Zhang, H. Y..,Wang, P..,...&Li, D..(2023).An Overview of FAST Real-time Fast Radio Burst Searching System.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,23(9),095023. |
| MLA | Zhang, X. X.,et al."An Overview of FAST Real-time Fast Radio Burst Searching System".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 23.9(2023):095023. |
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| Zhang-2023-An Overvi（1881KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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