Institutional Repository of Radio Astronomy Research Laboratory
| Simultaneous 2.25/8.60 GHz Observations of the Magnetar XTE J1810-197 | |
Huang, Zhi-Peng1,2,3; Yan, Zhen1,2,4; Shen, Zhi-Qiang1,4; Tong, Hao5 ; Yuan, Jian-Ping4,6; Lin, Lin7; Zhao, Rong-Bing1,4; Wu, Ya-Jun1,4; Liu, Jie5; Wang, Rui1,2; Wang, Xiao-Wei1,2
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| 2023-10-01 | |
| Source Publication | ASTROPHYSICAL JOURNAL
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| ISSN | 0004-637X |
| Volume | 956Issue:2Pages:93 |
| Contribution Rank | 6 |
| Abstract | We did 194 epochs of simultaneous 2.25/8.60 GHz observations of XTE J1810-197 in 926 days shortly following its reactivation in 2018 with Shanghai Tian Ma Radio Telescope (TMRT). Although its integrated profiles changed with both time and frequency during this period, they could be classified into 12 types according to phase areas of active radiation components. After MJD 59015, XTE J1810-197 turned from the normal emission state into the spiky emission state that was manifesting as a series of bright narrow sub-pulse bursts at both 2.25 and 8.60 GHz. Due to its variable integrated profiles and unsteady rotations, we got the spin frequency nu and spin-frequency derivatives nu with the piecewise fitting method. In addition, its long-term declining trend of nu was also obtained as nu=-3.2(1)x10(-13) s(-2) with the linear fitting method based on our observations spanning a comparatively longer period. We found its flux densities went through three stages: sharp decrease, stabilization, and day-to-day fluctuations in our dual-frequency observations. Although the flux density showed different stages, XTE J1810-197 showed a relatively flat spectrum (alpha > -1) in most observations. Assuming an ideal dipole magnetic field as some previous research works, we obtained the emission heights of XTE J1810-197 were about 7.5(9) x 10(4 )km and 2.38(7) x 10(4) km at 2.25 and 8.60 GHz, respectively. We also found that its emission heights would decrease rapidly with the degree of magnetic field twisting. |
| DOI | 10.3847/1538-4357/acf193 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | POLARIZED RADIO-EMISSION ; PULSAR-TIMING PACKAGE ; X-RAY ; SPIN-DOWN ; TRANSIENT MAGNETAR ; EVOLUTION ; MAGNETOSPHERE ; DISAPPEARANCE ; DISCOVERY ; OUTBURST |
| Funding Project | This work was supported in part by the National Key Ramp ; D Program of China (grant No. 2018YFA0404602), National Natural Science Foundation of China (grant Nos. U2031119 and 12041301), Natural Science Foundation of Shanghai (grant No. 20ZR1467600), and Cu[2018YFA0404602] ; National Key Ramp ; D Program of China[U2031119] ; National Key Ramp ; D Program of China[12041301] ; National Natural Science Foundation of China[20ZR1467600] ; Natural Science Foundation of Shanghai ; Cultivation Project for Scientific Payoff and Research Achievement of CAMS-CAS |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001082638200001 |
| Publisher | IOP Publishing Ltd |
| Funding Organization | This work was supported in part by the National Key Ramp ; D Program of China (grant No. 2018YFA0404602), National Natural Science Foundation of China (grant Nos. U2031119 and 12041301), Natural Science Foundation of Shanghai (grant No. 20ZR1467600), and Cu ; National Key Ramp ; D Program of China ; National Natural Science Foundation of China ; Natural Science Foundation of Shanghai ; Cultivation Project for Scientific Payoff and Research Achievement of CAMS-CAS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5550 |
| 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 Phas Sci & Technol, Shanghai 201210, Peoples R China 4.Chinese Acad Sci, Key Lab Radio Astron & Technol, A20 Datun Rd, Beijing 100101, Peoples R China 5.Guangzhou Univ, Sch Phys & Mat Sci, Guangzhou 510006, Peoples R China 6.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 7.Beijing Normal Univ, Dept Astron, Beijing 100875, 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 Magnetar XTE J1810-197[J]. ASTROPHYSICAL JOURNAL,2023,956(2):93. |
| APA | Huang, Zhi-Peng.,Yan, Zhen.,Shen, Zhi-Qiang.,Tong, Hao.,Yuan, Jian-Ping.,...&Wang, Xiao-Wei.(2023).Simultaneous 2.25/8.60 GHz Observations of the Magnetar XTE J1810-197.ASTROPHYSICAL JOURNAL,956(2),93. |
| MLA | Huang, Zhi-Peng,et al."Simultaneous 2.25/8.60 GHz Observations of the Magnetar XTE J1810-197".ASTROPHYSICAL JOURNAL 956.2(2023):93. |
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| Huang-2023-Simultane（8897KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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