Fast radio burst detection in the presence of coloured noise | |
Zhang, C. F.4,8; Xu, J. W.4,8; Men, Y. P.4,6,8; Deng, X. H.7; Xu, Heng4,8; Jiang, J. C.4,8; Wang, B. J.4,8; Lee, K. J.4; Li, J.5; Yuan, J. P.5 | |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
2021-06-01 | |
卷号 | 503期号:4页码:5223-5231 |
关键词 | methods: data analysis radio continuum: transients |
ISSN号 | 0035-8711 |
DOI | 10.1093/mnras/stab823 |
产权排序 | 第6完成单位 |
文献子类 | Article |
英文摘要 | In this paper, we investigate the impact of correlated noise on fast radio burst (FRB) searching. We found that (1) the correlated noise significantly increases the false alarm probability; (2) the signal-to-noise ratios (S/N) of the false positives become higher; (3) the correlated noise also affects the pulse width distribution of false positives, and there will be more false positives with wider pulse width. We use 55-h observation for M82 galaxy carried out at Nanshan 26m radio telescope to demonstrate the application of the correlated noise modelling. The number of candidates and parameter distribution of the false positives can be reproduced with the modelling of correlated noise. We will also discuss a low S/N candidate detected in the observation, for which we demonstrate the method to evaluate the false alarm probability in the presence of correlated noise. Possible origins of the candidate are discussed, where two possible pictures, an M82-harboured giant pulse and a cosmological FRB, are both compatible with the observation. |
学科主题 | 天文学 ; 射电天文学 ; 射电天文方法 |
URL标识 | 查看原文 |
出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
资助项目 | CAS[XDB23010200] ; Max-Planck Partner Group ; National SKA program of China[2020SKA0120100] ; NSFC[11690024] ; CAS Cultivation Project for FAST Scientific |
WOS关键词 | PULSAR |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000649001600037 |
资助机构 | CAS[XDB23010200] ; Max-Planck Partner Group ; National SKA program of China[2020SKA0120100] ; NSFC[11690024] ; CAS Cultivation Project for FAST Scientific |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24389] |
专题 | 云南天文台_射电天文研究组 |
通讯作者 | Lee, K. J. |
作者单位 | 1.National Time Service Center (NTSC), Chinese Academy of Sciences, Xi’an, Shaanxi Province, 710600, China 2.CSIRO Astronomy and Space Science, Australia Telescope National Facility, Box 76, Epping, NSW 1710, Australia 3.Radio Cosmology Laboratory, Department of Physics, Universiti Malaya, Kuala Lumpur, 50603, Malaysia 4.Department of Astronomy, Peking University, Beijing 100871, P.R. China 5.Xinjiang Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China 6.Max-Planck institut fur radioastronomie, Auf Dem H ¨ ugel, D-53121 Bonn, Germany 7.Bayesian Data Technologies (Wuhan) Co., Ltd., Wuhan 430079, Hubei, China 8.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, P.R. China 9.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China |
推荐引用方式 GB/T 7714 | Zhang, C. F.,Xu, J. W.,Men, Y. P.,et al. Fast radio burst detection in the presence of coloured noise[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,503(4):5223-5231. |
APA | Zhang, C. F..,Xu, J. W..,Men, Y. P..,Deng, X. H..,Xu, Heng.,...&Ma, Z. Y..(2021).Fast radio burst detection in the presence of coloured noise.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,503(4),5223-5231. |
MLA | Zhang, C. F.,et al."Fast radio burst detection in the presence of coloured noise".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 503.4(2021):5223-5231. |
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