NAOC Open IR
On the Circular Polarization of Repeating Fast Radio Bursts
Dai, Shi1,2; Lu, Jiguang3; Wang, Chen3; Wang, Wei-Yang3,4,5; Xu, Renxin4,5,6,7; Yang, Yuanpei8; Zhang, Songbo9; Hobbs, George2; Li, Di3,10,11; Luo, Rui; Filipovic, Miroslav1; Jiang, Jinchen7
2021-10-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume920Issue:1Pages:6
AbstractFast spinning (e.g., sub-second) neutron star with ultra-strong magnetic fields (or so-called magnetar) is one of the promising origins of repeating fast radio bursts (FRBs). Here we discuss circularly polarized emissions produced by propagation effects in the magnetosphere of fast spinning magnetars. We argue that the polarization-limiting region is well beyond the light cylinder, suggesting that wave mode coupling effects are unlikely to produce strong circular polarization for fast spinning magnetars. Cyclotron absorption could be significant if the secondary plasma density is high. However, high degrees of circular polarization can only be produced with large asymmetries in electrons and positrons. We draw attention to the non-detection of circular polarization in current observations of known repeating FRBs. We suggest that the circular polarization of FRBs could provide key information on their origins and help distinguish different radiation mechanisms.
Funding OrganizationAustralian Research Council Discovery Early Career Award - Australian Government ; Australian Research Council Discovery Early Career Award - Australian Government ; NSFC ; NSFC ; CAS ; CAS ; MoST ; MoST ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Australian Research Council Discovery Early Career Award - Australian Government ; Australian Research Council Discovery Early Career Award - Australian Government ; NSFC ; NSFC ; CAS ; CAS ; MoST ; MoST ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Australian Research Council Discovery Early Career Award - Australian Government ; Australian Research Council Discovery Early Career Award - Australian Government ; NSFC ; NSFC ; CAS ; CAS ; MoST ; MoST ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Australian Research Council Discovery Early Career Award - Australian Government ; Australian Research Council Discovery Early Career Award - Australian Government ; NSFC ; NSFC ; CAS ; CAS ; MoST ; MoST ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS
DOI10.3847/1538-4357/ac193d
WOS KeywordMAGNETIC-FIELD ; CYCLOTRON ABSORPTION ; CURVATURE RADIATION ; PULSARS ; PROPAGATION ; POLARIMETRY ; EMISSION ; ENVIRONMENT ; EVOLUTION ; PROFILES
Language英语
Funding ProjectAustralian Research Council Discovery Early Career Award - Australian Government[DE210101738] ; NSFC[11633004] ; NSFC[11653003] ; NSFC[11673002] ; NSFC[U1531243] ; NSFC[12003047] ; CAS[QYZDJ-SSW-SLH017] ; CAS[CAS XDB 23040100] ; MoST[2018YFE0120800] ; MoST[2016YFE0100300] ; National Key R&D Program of China[2017YFA0402602] ; Strategic Priority Research Program of CAS[XDB23010200]
Funding OrganizationAustralian Research Council Discovery Early Career Award - Australian Government ; Australian Research Council Discovery Early Career Award - Australian Government ; NSFC ; NSFC ; CAS ; CAS ; MoST ; MoST ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Australian Research Council Discovery Early Career Award - Australian Government ; Australian Research Council Discovery Early Career Award - Australian Government ; NSFC ; NSFC ; CAS ; CAS ; MoST ; MoST ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Australian Research Council Discovery Early Career Award - Australian Government ; Australian Research Council Discovery Early Career Award - Australian Government ; NSFC ; NSFC ; CAS ; CAS ; MoST ; MoST ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS ; Australian Research Council Discovery Early Career Award - Australian Government ; Australian Research Council Discovery Early Career Award - Australian Government ; NSFC ; NSFC ; CAS ; CAS ; MoST ; MoST ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of CAS ; Strategic Priority Research Program of CAS
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000706858800001
PublisherIOP Publishing Ltd
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/74977
Collection中国科学院国家天文台
Corresponding AuthorDai, Shi
Affiliation1.Western Sydney Univ, Locked Bag 1797, Penrith, NSW 2751, Australia
2.Australia Telescope Natl Facil, CSIRO Space & Astron, Sch Sci, Epping, NSW 1710, Australia
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
4.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
5.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
6.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
7.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China
8.Yunnan Univ, South Western Inst Astron Res, Kunming 650500, Yunnan, Peoples R China
9.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
10.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
11.Chinese Acad Sci, CAS Key Lab FAST, NAOC, FAST Collaborat, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Dai, Shi,Lu, Jiguang,Wang, Chen,et al. On the Circular Polarization of Repeating Fast Radio Bursts[J]. ASTROPHYSICAL JOURNAL,2021,920(1):6.
APA Dai, Shi.,Lu, Jiguang.,Wang, Chen.,Wang, Wei-Yang.,Xu, Renxin.,...&Jiang, Jinchen.(2021).On the Circular Polarization of Repeating Fast Radio Bursts.ASTROPHYSICAL JOURNAL,920(1),6.
MLA Dai, Shi,et al."On the Circular Polarization of Repeating Fast Radio Bursts".ASTROPHYSICAL JOURNAL 920.1(2021):6.
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