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A single-pulse study of PSR J0535-0231 discovered by FAST

文献类型：期刊论文

作者Cai, Yanqing7,8; Dang, Shijun6,8; Tedila, Habtamu Menberu4,5,7; Hao, Yuhuan8; Li, Wei3; Yuan, Jianping3; Zhi, Qijun5,8; Wang, Na3; Li, Di1,2,6; Wang, Pei2,6
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2025-11-01
卷号544期号:1页码:299-308
ISSN号0035-8711
DOI10.1093/mnras/staf1748
通讯作者Dang, Shijun(dangsj@gznu.edu.cn) ; Tedila, Habtamu Menberu(habta125@nao.cas.cn) ; Kou, Feifei(koufeifei@xao.ac.cn)
英文摘要We study the single-pulse variability of pulsar PSR J0535$-$0231, which was discovered by the Five-hundred-meter Aperture Spherical Radio Telescope (FAST) as part of the Commensal Radio Astronomy FAST Survey (CRAFTS) at 1.25 GHz. Through pulsar timing, we obtain precise measurements of this pulsar's position, rotational parameters, and dispersion measure. The integrated pulse profile of this pulsar exhibits at least three distinct emission components, namely the leading, central, and trailing components. The emission from the leading component is notably anticorrelated with that from the trailing component. A Gaussian mixture model (GMM) analysis shows that PSR J0535$-$0231 does not exhibit significant pulse nulling. From the examination of the total intensity and polarization profiles, we speculate that the leading component may originate from core emission, while the central and trailing components are associated with conal emission. Fluctuation spectral analysis reveals that this pulsar shows time-varying and different subpulse modulation phenomenon, including drifting modulation, phase-stationary amplitude modulation, and diffuse modulation. The traditional carousel model fails to fully account for these behaviours of PSR J0535$-$0231. Therefore, the emission characteristics of PSR J0535$-$0231 could shed light on the mechanisms underlying coherent radio emission in pulsars and serve as important constraints on theoretical models.
WOS关键词INVERSE COMPTON-SCATTERING ; SUBPULSE MODULATION ; EMISSION ; MODEL ; POLARIZATION ; CORE
资助项目National Natural Science Foundation of China[12588202] ; National Natural Science Foundation of China[U2031117] ; National Natural Science Foundation of China[U1838109] ; National Natural Science Foundation of China[11873080] ; National Natural Science Foundation of China[12041301] ; Alliance of International Science Organizations[ANSO-VF-2024-01]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001601387000001
出版者OXFORD UNIV PRESS
资助机构National Natural Science Foundation of China ; Alliance of International Science Organizations
源URL[http://ir.xao.ac.cn/handle/45760611-7/8280]  
专题脉冲星研究团组
通讯作者Dang, Shijun; Tedila, Habtamu Menberu; Kou, Feifei
作者单位1.Beijing Normal Univ, Inst Frontiers Astron & Astrophys, Beijing 102206, Peoples R China
2.Tsinghua Univ, Dept Astron, New Cornerstone Sci Lab, Beijing 100084, Peoples R China
3.State Key Lab Radio Astron & Technol, Beijing 100101, Peoples R China
4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
5.Arba Minch Univ, Arba Minch 21, Ethiopia
6.Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550025, Peoples R China
7.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
8.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550025, Peoples R China
推荐引用方式
GB/T 7714		 Cai, Yanqing,Dang, Shijun,Tedila, Habtamu Menberu,et al. A single-pulse study of PSR J0535-0231 discovered by FAST[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2025,544(1):299-308.
APA Cai, Yanqing.,Dang, Shijun.,Tedila, Habtamu Menberu.,Hao, Yuhuan.,Li, Wei.,...&Kou, Feifei.(2025).A single-pulse study of PSR J0535-0231 discovered by FAST.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,544(1),299-308.
MLA Cai, Yanqing,et al."A single-pulse study of PSR J0535-0231 discovered by FAST".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 544.1(2025):299-308.

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