Fast radio burst detection in the presence of coloured noise
文献类型：期刊论文
| 作者 | Zhang, C. F.8,9; Xu, J. W.8,9; Men, Y. P.7,8,9; Deng, X. H.6; Xu, Heng8,9; Jiang, J. C.8,9; Wang, B. J.8,9; Lee, K. J.9; Li, J.5 ; Yuan, J. P.5
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 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 |
| 通讯作者 | Lee, K. J.(kjlee@pku.edu.cn) |
| 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. |
| WOS关键词 | PULSAR |
| 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研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000649001600037 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | CAS ; Max-Planck Partner Group ; National SKA program of China ; NSFC ; CAS Cultivation Project for FAST Scientific |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4185]  |
| 专题 | 射电天文研究室_数字技术实验室 脉冲星研究团组 射电天文研究室_天线技术实验室 射电天文研究室_利用南山26米射电望远镜观测数据的文章 |
| 通讯作者 | Lee, K. J. |
| 作者单位 | 1.Univ Malaya, Dept Phys, Radio Cosmol Lab, Kuala Lumpur 50603, Malaysia 2.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, Box 76, Epping, NSW 1710, Australia 3.Chinese Acad Sci, Natl Time Serv Ctr NTSC, Xian 710600, Shaanxi, Peoples R China 4.Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China 5.Chinese Acad Sci, Xinjiang Astron Observ, Natl Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 6.Bayesian Data Technol Wuhan Co Ltd, Wuhan 430079, Hubei, Peoples R China 7.Max Planck Inst Radioastron, D-53121 Bonn, Germany 8.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 9.Peking Univ, Dept Astron, Beijing 100871, Peoples R 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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