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Applying saliency-map analysis in searches for pulsars and fast radio bursts
Zhang, C.1,2,3,4; Wang, C.3; Hobbs, G.4; Russell, C. J.5; Li, D.2,6,7; Zhang, S. -B.2,4,8; Dai, S.4; Wu, J. -W.1; Pan, Z. -C.1; Zhu, W. -W.1; Toomey, L.4; Ren, Z. -Y.1
2020-09-30
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN0004-6361
Volume642Pages:7
AbstractContext. We investigate the use of saliency-map analysis to aid in searches for transient signals, such as fast radio bursts and individual pulses from radio pulsars.Aims. Our aim is to demonstrate that saliency maps provide the means to understand predictions from machine learning algorithms and can be implemented in pipelines used to search for transient events.Methods. We implemented a new deep learning methodology to predict whether any segment of the data contains a transient event. The algorithm was trained using real and simulated data sets. We demonstrate that the algorithm is able to identify such events. The output results are visually analysed via the use of saliency maps.Results. We find that saliency maps can produce an enhanced image of any transient feature without the need for de-dispersion or removal of radio frequency interference. The maps can be used to understand which features in the image were used in making the machine learning decision and to visualise the transient event. Even though the algorithm reported here was developed to demonstrate saliency-map analysis, we have detected a single burst event, in archival data, with dispersion measure of 41 cm(-3) pc that is not associated with any currently known pulsar.
Keywordmethods: data analysis techniques: image processing methods: statistical methods: numerical pulsars: general
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; China Scholarship Council (CSC) Joint PhD Training Program grant ; China Scholarship Council (CSC) Joint PhD Training Program grant ; Australian Government ; Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; China Scholarship Council (CSC) Joint PhD Training Program grant ; China Scholarship Council (CSC) Joint PhD Training Program grant ; Australian Government ; Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; China Scholarship Council (CSC) Joint PhD Training Program grant ; China Scholarship Council (CSC) Joint PhD Training Program grant ; Australian Government ; Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; China Scholarship Council (CSC) Joint PhD Training Program grant ; China Scholarship Council (CSC) Joint PhD Training Program grant ; Australian Government ; Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1051/0004-6361/201937234
WOS KeywordDISCOVERY
Language英语
Funding ProjectNational Natural Science Foundation of China[11988101] ; National Natural Science Foundation of China[U1731238] ; National Natural Science Foundation of China[11725313] ; National Natural Science Foundation of China[11690024] ; National Natural Science Foundation of China[11743002] ; National Natural Science Foundation of China[11873067] ; National Natural Science Foundation of China[U1731218] ; National Natural Science Foundation of China[11565010] ; National Natural Science Foundation of China[11603046] ; National Natural Science Foundation of China[U1531246] ; National Natural Science Foundation of China[11703047] ; National Natural Science Foundation of China[11590783] ; CAS International Partnership Program[114A11KYSB20160008] ; CAS "Light of West China" Program ; China Scholarship Council (CSC) Joint PhD Training Program grant ; Australian Government ; National Natural Science Foundation of China
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; China Scholarship Council (CSC) Joint PhD Training Program grant ; China Scholarship Council (CSC) Joint PhD Training Program grant ; Australian Government ; Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; China Scholarship Council (CSC) Joint PhD Training Program grant ; China Scholarship Council (CSC) Joint PhD Training Program grant ; Australian Government ; Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; China Scholarship Council (CSC) Joint PhD Training Program grant ; China Scholarship Council (CSC) Joint PhD Training Program grant ; Australian Government ; Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS International Partnership Program ; CAS International Partnership Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; China Scholarship Council (CSC) Joint PhD Training Program grant ; China Scholarship Council (CSC) Joint PhD Training Program grant ; Australian Government ; Australian Government ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000577100200008
PublisherEDP SCIENCES S A
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/82077
Collection中国科学院国家天文台
Corresponding AuthorZhang, C.
Affiliation1.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.CSIRO Data61, Sydney, NSW 2015, Australia
4.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, Box 76, Epping, NSW 1710, Australia
5.CSIRO Sci Comp, Sydney, NSW 2015, Australia
6.Chinese Acad Sci, CAS Key Lab FAST, Natl Astron Observ, Beijing 100012, Peoples R China
7.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr NUCAC, ZA-4000 Durban, South Africa
8.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714		 Zhang, C.,Wang, C.,Hobbs, G.,et al. Applying saliency-map analysis in searches for pulsars and fast radio bursts[J]. ASTRONOMY & ASTROPHYSICS,2020,642:7.
APA Zhang, C..,Wang, C..,Hobbs, G..,Russell, C. J..,Li, D..,...&Ren, Z. -Y..(2020).Applying saliency-map analysis in searches for pulsars and fast radio bursts.ASTRONOMY & ASTROPHYSICS,642,7.
MLA Zhang, C.,et al."Applying saliency-map analysis in searches for pulsars and fast radio bursts".ASTRONOMY & ASTROPHYSICS 642(2020):7.
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