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Simultaneous 2.25/8.60 GHz observations of the newly discovered magnetar - Swift J1818.0-1607

文献类型：期刊论文

作者Huang, Zhi-Peng8,9,10; Yan, Zhen7,9,10; Shen, Zhi-Qiang7,8,9,10; Tong, Hao6; Lin, Lin5; Yuan, Jian-Ping4,7,9; Liu, Jie8,9,10; Zhao, Ru-Shuang2,3; Ge, Ming-Yu1; Wang, Rui9,10
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2021-07-01
卷号505期号:1页码:1311-1315
关键词stars: magnetars stars: neutron pulsars: individual: Swift J1818.0-1607
ISSN号0035-8711
DOI10.1093/mnras/stab1362
通讯作者Yan, Zhen(yanzhen@shao.ac.cn)
英文摘要Swift 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.
WOS关键词RADIO ; J1810-197 ; SPECTRUM ; BEHAVIOR
资助项目Natural 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]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000671453100089
出版者OXFORD UNIV PRESS
资助机构Natural Science Foundation of Shanghai ; National Natural Science Foundation of China ; Strategic Priority Research Program of the CAS ; National Key R&D Program of China ; Foundation of Guizhou Provincial Education Department
源URL[http://ir.xao.ac.cn/handle/45760611-7/4550]  
专题脉冲星研究团组
通讯作者Yan, Zhen
作者单位1.Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, 19B Yuquan Rd, Beijing 100049, Peoples R China
2.Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Peoples R China
3.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China
4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
5.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
6.Guangzhou Univ, Sch Phys & Mat Sci, Guangzhou 510006, Peoples R China
7.Chinese Acad Sci, Key Lab Radio Astron, 10 Yuanhua Rd, Nanjing 210033, Jiangsu, Peoples R China
8.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
9.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
10.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
推荐引用方式
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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