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Fast radio burst detection in the presence of coloured noise
Zhang, C. F.1,2; Xu, J. W.1,2; Men, Y. P.1,2,3; Deng, X. H.4; Xu, Heng1,2; Jiang, J. C.1,2; Wang, B. J.1,2; Lee, K. J.1; Li, J.5; Yuan, J. P.5; Liu, Z. Y.5; Huang, Y. X.6; Xu, Y. H.6; Li, Z. X.6; Hao, L. F.6; Luo, J. T.7; Dai, S.7; Luo, R.8; Zakie, Hassan9; Ma, Z. Y.4
2021-06-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume503Issue:4Pages:5223-5231
AbstractIn 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.
Corresponding AuthorLee, K. J.(kjlee@pku.edu.cn)
Keywordmethods: data analysis radio continuum: transients
DOI10.1093/mnras/stab823
Indexed BySCI ; SCI
Language英语
WOS KeywordPULSAR
Funding ProjectCAS[XDB23010200] ; Max-Planck Partner Group ; National SKA program of China[2020SKA0120100] ; NSFC[11690024] ; CAS Cultivation Project for FAST Scientific
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000649001600037
PublisherOXFORD UNIV PRESS
Funding OrganizationCAS ; Max-Planck Partner Group ; National SKA program of China ; NSFC ; CAS Cultivation Project for FAST Scientific
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/4186
Collection射电天文研究室
Corresponding AuthorLee, K. J.
Affiliation1.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
2.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
3.Max Planck Inst Radioastron, D-53121 Bonn, Germany
4.Bayesian Data Technol Wuhan Co Ltd, Wuhan 430079, Hubei, Peoples R China
5.Chinese Acad Sci, Xinjiang Astron Observ, Natl Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
6.Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China
7.Chinese Acad Sci, Natl Time Serv Ctr NTSC, Xian 710600, Shaanxi, Peoples R China
8.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, Box 76, Epping, NSW 1710, Australia
9.Univ Malaya, Dept Phys, Radio Cosmol Lab, Kuala Lumpur 50603, Malaysia
Recommended Citation
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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