中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A New Emission Mode of PSR B1859+07

文献类型:期刊论文

作者Wang, Tao3,4; Wang, P. F.2,3,4; Han, J. L.2,3,4; Yan, Yi3,4; Yu, Ye-Zhao5; Kou, Feifei1
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2023-10-01
卷号23期号:10页码:104003
关键词(stars:) pulsars: individual (PSR B1859+07) polarization plasmas
ISSN号1674-4527
DOI10.1088/1674-4527/acd596
产权排序5
英文摘要Previous studies have identified two emission modes in PSR B1859+07: a normal mode that has three prominent components in the average profile, with the trailing one being the brightest, and an anomalous mode (i.e., the A mode) where emissions seem to be shifted to an earlier phase. Within the normal mode, further analysis has revealed the presence of two submodes, i.e., the cW mode and cB mode, where the central component can appear either weak or bright. As for the anomalous mode, a new bright component emerges in the advanced phase while the bright trailing component in the normal mode disappears. New observations of PSR B1859+07 using the Five-hundred-meter Aperture Spherical Radio Telescope (FAST) have revealed the existence of a previously unknown emission mode, dubbed the Af mode. In this mode, all emission components seen in the normal and anomalous modes are detected. Notably, the mean polarization profiles of both the A and Af modes exhibit a jump in the orthogonal polarization angle modes in the bright leading component. The polarization angles for the central component in the original normal mode follow two distinct orthogonal polarization modes in the A and Af modes respectively. The polarization angles for the trailing component show almost the same but a small systematic shift in the A and Af modes, roughly following the values for the cW and cB modes. Those polarization features of this newly detected emission mode imply that the anomalous mode A of PSR B1859+07 is not a result of "phase shift" or "swooshes" of normal components, but simply a result of the varying intensities of different profile components. Additionally, subpulse drifting has been detected in the leading component of the Af mode.
WOS关键词PULSARS ; B0919+06
资助项目National Key R&D Program of China[2021YFA1600401] ; National Key R&D Program of China[2021YFA1600400] ; National Natural Science Foundation of China[11873058] ; National Natural Science Foundation of China[12133004] ; National Natural Science Foundation of China[11988101] ; National Natural Science Foundation of China[11833009]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001067446200001
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
资助机构National Key R&D Program of China ; National Natural Science Foundation of China
源URL[http://ir.xao.ac.cn/handle/45760611-7/5519]  
专题脉冲星研究团组
科研仪器设备产出_我台利用FAST观测数据文章
通讯作者Wang, P. F.; Han, J. L.
作者单位1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, key Lab Radio Astron & Technol, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
5.Qiannan Normal Univ Nationalities, Duyun 558000, Peoples R China
推荐引用方式
GB/T 7714
Wang, Tao,Wang, P. F.,Han, J. L.,et al. A New Emission Mode of PSR B1859+07[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2023,23(10):104003.
APA Wang, Tao,Wang, P. F.,Han, J. L.,Yan, Yi,Yu, Ye-Zhao,&Kou, Feifei.(2023).A New Emission Mode of PSR B1859+07.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,23(10),104003.
MLA Wang, Tao,et al."A New Emission Mode of PSR B1859+07".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 23.10(2023):104003.

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