Fast radio burst detection in the presence of coloured noise

doi:10.1093/mnras/stab823

	Fast radio burst detection in the presence of coloured noise
	Zhang, C. F.8,9; Xu, J. W.8,9; Men, Y. P.7,8,9; Deng, X. H.6; Xu, Heng 8,9; Jiang, J. C.8,9; Wang, B. J.8,9; Lee, K. J.9; 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
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.
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 ; Max-Planck Partner Group ; National SKA program of China ; NSFC ; CAS Cultivation Project for FAST Scientific
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/4185]
专题	新疆天文台_射电天文研究室
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.