Institutional Repository of Radio Astronomy Research Laboratory
| Investigation of Individual Pulse Emission Behaviors from Pulsar J1741-0840 | |
Xu, Y. H.1; Wen, Z. G.2,8 ; Yuan, J. P.2; Wang, Z.2,3; Duan, X. F.2,4; Wang, Z.2,5; Wang, N.2; Wang, M.1; Wang, H. G.6; Rusul, A.7; Hao, L. F.1; Han, W.2
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| 2024-12-01 | |
| Source Publication | ASTROPHYSICAL JOURNAL
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| ISSN | 0004-637X |
| Volume | 977Issue:1Pages:148 |
| Contribution Rank | 2 |
| Abstract | We have carried out a detailed study of individual pulse emission from the pulsar J1741-0840 (B1738-08) observed using the Parkes and Effelsberg radio telescopes at the L band. The pulsar exhibits four emission components, which are not well resolved by employing multicomponent Gaussian fitting. The radio emission originates at a height of approximately 1000 km, with the viewing geometry characterized by inclination and impact angles roughly estimated at 81 degrees and 3 degrees, respectively. Fluctuation spectral analysis of single pulse behavior reveals two prominent periodicities, around 32 and five rotation periods. The longer periodic modulation feature is linked to nulling behavior across the entire emission window, with an updated nulling fraction of 23% +/- 2% derived from pulse energy distribution via Gaussian mixture modeling. In addition to quasiperiodic nulling, the pulsar also exhibits the presence of subpulse drifting in the trailing component, with the shorter periodic feature in the fluctuation spectra related to the phenomenon of subpulse drifting, and the longitudinal separation estimated to be about 5 degrees. Both periodic modulations show significant temporal evolution with time-dependent fluctuation power. The implications of understanding the radio emission mechanisms are discussed. |
| DOI | 10.3847/1538-4357/ad7fe2 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | SINGLE-PULSE ; STATISTICAL-ANALYSIS ; SUBPULSE MODULATION ; RADIO PULSARS ; FLUX-DENSITY ; POLARIZATION ; PROFILES ; NULLS ; POLARIMETRY ; FREQUENCIES |
| Funding Project | National Key Research and Development Program of China[2022YFC2205203] ; Major Science and Technology Program of the Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China (NSFC)[12288102] ; National Natural Science Foundation of China (NSFC)[12041301] ; National Natural Science Foundation of China (NSFC)[U1838109] ; National Natural Science Foundation of China (NSFC)[12203094] ; Open project of the Key Laboratory in the Xinjiang Uygur Autonomous Region of China[2023D04058] ; Chinese Academy of Sciences Foundation of the young scholars of western[2020-XBQNXZ-019] ; Xinjiang Uygur Autonomous Region of China for Tianshan elites ; Youth Innovation Promotion Association of CAS ; Tianshan Talent Training Program[2023TSYCCX0100] ; CAS Light of West China Program ; Tianshan Talent Program of Xinjiang Uygur Autonmous region of China[2023TSYCTD0013] ; Australian government ; Xinjiang Uygur Autonomous Region of China for Flexibly Fetching in Upscale Talents ; CAS Light of West China Program[2019-XBQNXZ-B-019] ; [2022A03013-1] ; [12303053] ; [2023069] |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001369728700001 |
| Publisher | IOP Publishing Ltd |
| Funding Organization | National Key Research and Development Program of China ; Major Science and Technology Program of the Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China (NSFC) ; Open project of the Key Laboratory in the Xinjiang Uygur Autonomous Region of China ; Chinese Academy of Sciences Foundation of the young scholars of western ; Xinjiang Uygur Autonomous Region of China for Tianshan elites ; Youth Innovation Promotion Association of CAS ; Tianshan Talent Training Program ; CAS Light of West China Program ; Tianshan Talent Program of Xinjiang Uygur Autonmous region of China ; Australian government ; Xinjiang Uygur Autonomous Region of China for Flexibly Fetching in Upscale Talents ; CAS Light of West China Program |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/7298 |
| Collection | 射电天文研究室_脉冲星研究团组 |
| Corresponding Author | Wen, Z. G. |
| Affiliation | 1.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 3.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Xinjiang, Peoples R China 4.Key Lab Microwave Technol, Urumqi 830011, Xinjiang, Peoples R China 5.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 6.Guangzhou Univ, Sch Phys & Mat Sci, Guangzhou 510006, Guangdong, Peoples R China 7.Kashi Univ, Inst Phys & Elect Engn, Kashgar 844009, Xinjiang, Peoples R China 8.Chinese Acad Sci, Key Lab Radio Astron & Technol, Beijing 100101, Peoples R China |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Xu, Y. H.,Wen, Z. G.,Yuan, J. P.,et al. Investigation of Individual Pulse Emission Behaviors from Pulsar J1741-0840[J]. ASTROPHYSICAL JOURNAL,2024,977(1):148. |
| APA | Xu, Y. H..,Wen, Z. G..,Yuan, J. P..,Wang, Z..,Duan, X. F..,...&Han, W..(2024).Investigation of Individual Pulse Emission Behaviors from Pulsar J1741-0840.ASTROPHYSICAL JOURNAL,977(1),148. |
| MLA | Xu, Y. H.,et al."Investigation of Individual Pulse Emission Behaviors from Pulsar J1741-0840".ASTROPHYSICAL JOURNAL 977.1(2024):148. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Xu-2024.pdf（1572KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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