Institutional Repository of Radio Astronomy Research Laboratory
| 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
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| 2021-07-01 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| ISSN | 0035-8711 |
| Volume | 505Issue:1Pages:1311-1315 |
| Contribution Rank | 7 |
| Abstract | 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. |
| Keyword | stars: magnetars stars: neutron pulsars: individual: Swift J1818.0-1607 |
| DOI | 10.1093/mnras/stab1362 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | RADIO ; J1810-197 ; SPECTRUM ; BEHAVIOR |
| Funding Project | 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 Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000671453100089 |
| Publisher | OXFORD UNIV PRESS |
| Funding Organization | 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 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4551 |
| Collection | 射电天文研究室_脉冲星研究团组 |
| Corresponding Author | Yan, Zhen |
| Affiliation | 1.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 |
| Recommended Citation 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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| Huang-2021-Simultane（1436KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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