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| Multifrequency Study of Periodic Nulling and Subpulse Drifting in Pulsar J2048-1616 | |
Wang, Z.1,2; Wen, Z. G.2,3,4 ; Yuan, J. P.2; Wang, N.2; Chen, J. L.5; Yan, W. M.2; Yuen, R.2; Duan, X. F.2,3; Xiang, B. B.2; He, D. L.2
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| 2021-12-01 | |
| Source Publication | ASTROPHYSICAL JOURNAL
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| ISSN | 0004-637X |
| Volume | 923Issue:2Pages:259 |
| Contribution Rank | 2 |
| Abstract | We have carried out a detailed study of single-pulse emission from the pulsar J2048-1616 (B2045-16), observed at 732, 1369, and 3100 MHz frequencies using the Parkes 64 m radio telescope. The pulsar possesses three well-resolved emission components, with the central component resembling core emission. The single pulses show the presence of two distinct periodic modulations using fluctuation spectral analysis. About 12% nulls are found to create alternating bunches of nulls and bursts in a quasiperiodic manner with longer periodicities of 83, 28, and 14 rotational periods for simultaneous observations at 732 and 3100 MHz. At 1369 MHz, the quasiperiodic nulling is detected, as well, to modulate across the entire profile both in the core and conal components simultaneously with a fluctuation rate of about 50 rotational periods, and the nulling fraction is estimated to be around 10%. Additionally, the quasiperiodic modulations are significantly dependent on time. In addition to nulling, the pulsar also presents subpulse drifting in the single-pulse sequences with shorter periodicity. The subpulse drifting is presented in the conal components and is absent in the central core emission. The leading component is modulated in longitude with a period of three pulses. The trailing component remains phase stationary within the pulse window but periodically modulates in amplitude with a period of three pulses. Finally, possible physical mechanisms are discussed. |
| DOI | 10.3847/1538-4357/ac32ba |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | EMPIRICAL-THEORY ; EMISSION ; MODULATION ; INTENSITY ; BEHAVIOR ; MECHANISM ; PHASE ; MODEL |
| Funding Project | Chinese National Science Foundation[U1838109] ; National Natural Science Foundation of China[12041304] ; National Natural Science Foundation of China[12041301] ; National SKA Program of China[2020SKA0120100] ; 2021 project Xinjiang Uygur Autonomous Region of China for Tianshan elites ; Natural Science Foundation of Shanxi Province ; Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi[2021L470] ; Open Fund of Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing ; Australian Government |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000735174800001 |
| Publisher | IOP Publishing Ltd |
| Funding Organization | Chinese National Science Foundation ; National Natural Science Foundation of China ; National SKA Program of China ; 2021 project Xinjiang Uygur Autonomous Region of China for Tianshan elites ; Natural Science Foundation of Shanxi Province ; Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi ; Open Fund of Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing ; Australian Government |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4429 |
| Collection | 射电天文研究室_脉冲星研究团组 射电天文研究室 已撤销研究室/团组_应用天文研究室 射电天文研究室_数字技术实验室 |
| Corresponding Author | Wen, Z. G. |
| Affiliation | 1.Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Xinjiang, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 3.Key Lab Microwave Technol, Urumqi 830011, Xinjiang, Peoples R China 4.Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Guizhou, Peoples R China 5.Yuncheng Univ, Dept Phys & Elect Engn, Yuncheng 044000, Shanxi, Peoples R China |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Wang, Z.,Wen, Z. G.,Yuan, J. P.,et al. Multifrequency Study of Periodic Nulling and Subpulse Drifting in Pulsar J2048-1616[J]. ASTROPHYSICAL JOURNAL,2021,923(2):259. |
| APA | Wang, Z..,Wen, Z. G..,Yuan, J. P..,Wang, N..,Chen, J. L..,...&He, D. L..(2021).Multifrequency Study of Periodic Nulling and Subpulse Drifting in Pulsar J2048-1616.ASTROPHYSICAL JOURNAL,923(2),259. |
| MLA | Wang, Z.,et al."Multifrequency Study of Periodic Nulling and Subpulse Drifting in Pulsar J2048-1616".ASTROPHYSICAL JOURNAL 923.2(2021):259. |
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| Wang-2021-Multifrequ（1740KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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