NAOC Open IR
Simultaneous 2.25/8.60 GHz observations of the newly discovered magnetar - Swift J1818.0-1607
Huang, Zhi-Peng1,2,3; Yan, Zhen1,2,4; Shen, Zhi-Qiang1,2,3,4; Tong, Hao5; Lin, Lin6; Yuan, Jian-Ping2,4,7; Liu, Jie1,2,3; Zhao, Ru-Shuang8,9; Ge, Ming-Yu10; Wang, Rui1,2
2021-07-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume505Issue:1Pages:1311-1315
AbstractSwift J1818.0-1607 discovered in early 2020 is not only the fifth magnetar known with periodic radio pulsations but also the fastest rotating one. Simultaneous 2.25/8.60 GHz observations of Swift J1818.0-1607 were carried out with Shanghai Tian Ma Radio Telescope (TMRT) from MJD 58936 to 59092. The spin-frequency nu and first-order derivative of this magnetar were obtained with piecewise fitting method because of its instable timing properties. We found that the amplitude of short-term fluctuations decreased with time, and the long-term declining trend of nu discovered previously continued in our observations. The best fit long-term were about using our observation data spanning 156 d. The derived characteristic age was about 522 yr, supporting the recent viewpoint that this magnetar may be older than initially thought shortly after its discovery. The flux density of this magnetar was increased at both 2.25 and 8.60 GHz during our observations, and its radio spectrum became flatter at the same time. We also detected bright-quiet type emission mode switching in Swift J1818.0-1607.
Keywordstars: magnetars stars: neutron pulsars: individual: Swift J1818.0-1607
Funding OrganizationNatural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the CAS ; Strategic Priority Research Program of the CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Foundation of Guizhou Provincial Education Department ; Foundation of Guizhou Provincial Education Department ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the CAS ; Strategic Priority Research Program of the CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Foundation of Guizhou Provincial Education Department ; Foundation of Guizhou Provincial Education Department ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the CAS ; Strategic Priority Research Program of the CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Foundation of Guizhou Provincial Education Department ; Foundation of Guizhou Provincial Education Department ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the CAS ; Strategic Priority Research Program of the CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Foundation of Guizhou Provincial Education Department ; Foundation of Guizhou Provincial Education Department
DOI10.1093/mnras/stab1362
WOS KeywordRADIO ; J1810-197 ; SPECTRUM ; BEHAVIOR
Language英语
Funding ProjectNatural Science Foundation of Shanghai[20ZR1467600] ; National Natural Science Foundation of China[U2031119] ; National Natural Science Foundation of China[U1631122] ; National Natural Science Foundation of China[11633007] ; Strategic Priority Research Program of the CAS[XDB23010200] ; National Key R&D Program of China[2018YFA0404602] ; Foundation of Guizhou Provincial Education Department[KY(2020)003]
Funding OrganizationNatural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the CAS ; Strategic Priority Research Program of the CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Foundation of Guizhou Provincial Education Department ; Foundation of Guizhou Provincial Education Department ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the CAS ; Strategic Priority Research Program of the CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Foundation of Guizhou Provincial Education Department ; Foundation of Guizhou Provincial Education Department ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the CAS ; Strategic Priority Research Program of the CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Foundation of Guizhou Provincial Education Department ; Foundation of Guizhou Provincial Education Department ; Natural Science Foundation of Shanghai ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the CAS ; Strategic Priority Research Program of the CAS ; National Key R&D Program of China ; National Key R&D Program of China ; Foundation of Guizhou Provincial Education Department ; Foundation of Guizhou Provincial Education Department
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000671453100089
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/76889
Collection中国科学院国家天文台
Corresponding AuthorYan, Zhen
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
4.Chinese Acad Sci, Key Lab Radio Astron, 10 Yuanhua Rd, Nanjing 210033, Jiangsu, Peoples R China
5.Guangzhou Univ, Sch Phys & Mat Sci, Guangzhou 510006, Peoples R China
6.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
7.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
8.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China
9.Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Peoples R China
10.Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, 19B Yuquan Rd, Beijing 100049, Peoples R China
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GB/T 7714
Huang, Zhi-Peng,Yan, Zhen,Shen, Zhi-Qiang,et al. Simultaneous 2.25/8.60 GHz observations of the newly discovered magnetar - Swift J1818.0-1607[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,505(1):1311-1315.
APA Huang, Zhi-Peng.,Yan, Zhen.,Shen, Zhi-Qiang.,Tong, Hao.,Lin, Lin.,...&Wang, Rui.(2021).Simultaneous 2.25/8.60 GHz observations of the newly discovered magnetar - Swift J1818.0-1607.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,505(1),1311-1315.
MLA Huang, Zhi-Peng,et al."Simultaneous 2.25/8.60 GHz observations of the newly discovered magnetar - Swift J1818.0-1607".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 505.1(2021):1311-1315.
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