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| Simultaneous 2.25/8.60 GHz observations of the newly discovered magnetar - Swift J1818.0-1607 | |
| 2021-07 | |
| 发表期刊 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| ISSN | 0035-8711 |
| EISSN | 1365-2966 |
| 卷号 | 505期号:1页码:1311-1315 |
| 发表状态 | 已发表 |
| DOI | 10.1093/mnras/stab1362 |
| 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. |
| 关键词 | stars: magnetars stars: neutron pulsars: individual: Swift J1818.0-1607 |
| URL | 查看原文 |
| 收录类别 | SCI ; EI ; SCIE |
| 语种 | 英语 |
| 资助项目 | Natural Science Foundation of Shanghai[20ZR1467600] ; National Natural Science Foundation of China[ |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| WOS记录号 | WOS:000671453100089 |
| 出版者 | OXFORD UNIV PRESS |
| 原始文献类型 | Article |
| 来源库 | IEEE |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/127732 |
| 专题 | 物质科学与技术学院 物质科学与技术学院_特聘教授组_沈志强组 物质科学与技术学院_博士生 |
| 作者单位 | 1.Shanghai Astronomical Observatory, CAS, Shanghai 200030, China; School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China; School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China 2.Shanghai Astronomical Observatory, CAS, Shanghai 200030, China; School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Radio Astronomy, CAS, 10 Yuanhua Road, Nanjing, JiangSu 210033, China; yanzhen@shao.ac.cn 3.Shanghai Astronomical Observatory, CAS, Shanghai 200030, China; School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China; School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China; Key Laboratory of Radio Astronomy, CAS, 10 Yuanhua Road, Nanjing, JiangSu 210033, China 4.School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China 5.Department of Astronomy, Beijing Normal University, Beijing 100875, China 6.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Radio Astronomy, CAS, 10 Yuanhua Road, Nanjing, JiangSu 210033, China; Xinjiang Astronomical Observatory, CAS, Xinjiang 830011, China 7.School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, China; Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guizhou Normal University, Guiyang 550001, China 8.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, CAS, 19B Yuquan Road, Beijing 100049, China 9.Shanghai Astronomical Observatory, CAS, Shanghai 200030, China; School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China |
| 第一作者单位 | 物质科学与技术学院 |
| 第一作者的第一单位 | 物质科学与技术学院 |
| 推荐引用方式 GB/T 7714 | Zhi-Peng Huang,Zhen Yan,Zhi-Qiang Shen,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 | Zhi-Peng Huang.,Zhen Yan.,Zhi-Qiang Shen.,Hao Tong.,Lin Lin.,...&Rui Wang.(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 | Zhi-Peng Huang,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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