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Investigation of Individual Pulse Emission Behaviors from Pulsar J1741-0840

文献类型：期刊论文

作者Xu, Y. H.4; Wen, Z. G.3,5; Yuan, J. P.3; Wang, Z.2,3; Duan, X. F.1,3; Wang, Z.3,8; Wang, N.3; Wang, M.4; Wang, H. G.7; Rusul, A.6
刊名ASTROPHYSICAL JOURNAL
出版日期2024-12-01
卷号977期号:1页码:148
ISSN号0004-637X
DOI10.3847/1538-4357/ad7fe2
产权排序2
英文摘要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.
WOS关键词SINGLE-PULSE ; STATISTICAL-ANALYSIS ; SUBPULSE MODULATION ; RADIO PULSARS ; FLUX-DENSITY ; POLARIZATION ; PROFILES ; NULLS ; POLARIMETRY ; FREQUENCIES
资助项目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研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001369728700001
出版者IOP Publishing Ltd
资助机构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
源URL[http://ir.xao.ac.cn/handle/45760611-7/7297]  
专题脉冲星研究团组
通讯作者Wen, Z. G.
作者单位1.Key Lab Microwave Technol, Urumqi 830011, Xinjiang, Peoples R China
2.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Xinjiang, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
4.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China
5.Chinese Acad Sci, Key Lab Radio Astron & Technol, Beijing 100101, Peoples R China
6.Kashi Univ, Inst Phys & Elect Engn, Kashgar 844009, Xinjiang, Peoples R China
7.Guangzhou Univ, Sch Phys & Mat Sci, Guangzhou 510006, Guangdong, Peoples R China
8.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
推荐引用方式
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.

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