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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 YX(黄玉祥)6; Yu YH(余永华)6; Li ZX(李志玄)6; Hao LF(郝龙飞)6; Luo, J. T.7; Dai, S.7; Luo, R.8; Zakie, Hassan9; Ma, Z. Y.4
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2021-06-01
Volume503Issue:4Pages:5223-5231
DOI10.1093/mnras/stab823
Contribution Rank第6完成单位
Indexed BySCI
Keywordmethods: data analysis radio continuum: transients
Abstract

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.

Funding ProjectCAS[XDB23010200] ; Max-Planck Partner Group ; National SKA program of China[2020SKA0120100] ; NSFC[11690024] ; CAS Cultivation Project for FAST Scientific
Funding OrganizationCAS[XDB23010200] ; Max-Planck Partner Group ; National SKA program of China[2020SKA0120100] ; NSFC[11690024] ; CAS Cultivation Project for FAST Scientific
Language英语
Subject Area天文学 ; 射电天文学 ; 射电天文方法
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000649001600037
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordPULSAR
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/24390
Collection射电天文研究组
Corresponding AuthorLee, K. J.
Affiliation1.Department of Astronomy, Peking University, Beijing 100871, P.R. China
2.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, P.R. China
3.Max-Planck institut fur radioastronomie, Auf Dem H ¨ ugel, D-53121 Bonn, Germany
4.Bayesian Data Technologies (Wuhan) Co., Ltd., Wuhan 430079, Hubei, China
5.Xinjiang Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China
6.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China
7.National Time Service Center (NTSC), Chinese Academy of Sciences, Xi’an, Shaanxi Province, 710600, China
8.CSIRO Astronomy and Space Science, Australia Telescope National Facility, Box 76, Epping, NSW 1710, Australia
9.Radio Cosmology Laboratory, Department of Physics, Universiti Malaya, 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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