An Overview of FAST Real-time Fast Radio Burst Searching System
文献类型：期刊论文
| 作者 | Zhang, X. X.7,8; Duan, R.8; Gajjar, V.6 ; Zhang, H. Y.5,8; Wang, P.8; Niu, C. H.8; Werthimer, D.4,6; Cobb, J.4,6; Li, S. Y.3; Pei, X.2
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2023-09-01 |
| 卷号 | 23期号:9页码:13 |
| 关键词 | Astronomical Instrumentation Methods and Techniques instrumentation: spectrographs methods: miscellaneous |
| ISSN号 | 1674-4527 |
| DOI | 10.1088/1674-4527/ace518 |
| 通讯作者 | Zhang, X. X.(zhangxinxin@nao.cas.cn) ; Duan, R.(duanran@nao.cas.cn) ; Zhang, H. Y.(hyzhang@bao.ac.cn) |
| 英文摘要 | 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. |
| WOS关键词 | FRB 121102 |
| 资助项目 | 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研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001051640500001 |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| 资助机构 | International Partnership Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Key Ramp;D Program of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/5386]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Zhang, X. X.; Duan, R.; Zhang, H. Y. |
| 作者单位 | 1.Univ KwaZulu Natal, NAOC UKZN Comp Astrophys Ctr, ZA-4000 Durban, South Africa 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 3.Beijing Acad Sci & Technol, Beijing Planetarium, Beijing 100044, Peoples R China 4.Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA 5.Hebei Key Lab Radio Astron Technol, Shijiazhuang 050081, Peoples R China 6.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 8.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China |
| 推荐引用方式 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):13. |
| 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),13. |
| 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):13. |
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