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Spin-down and emission variations for PSR J0742-2822

文献类型：期刊论文

作者Dang, Shi-Jun1,2; Wang, Na1,3; Wang, Hui-Hui4; Yuan, Jian-Ping1,3; Shang, Lun-Hua5,7; Yuen, Rai1,3; Ge, Ming-Yu6; Zhou, Xia1,3; Wang, Shuang-Qiang1,2; Kou, Fei-Fei1,7
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2021-03-01
卷号21期号:2页码:042
ISSN号1674-4527
关键词pulsars general stars pulsar methods timing
DOI10.1088/1674-4527/21/2/42
产权排序1
英文摘要PSR J0742-2822 is known for its quasi-periodic changes in the observed pulse profile and spindown rate. In this paper, we analyzed 13 years of timing data obtained with the Nanshan 25-m radio telescope and the Parkes 64-m radio telescope. We found that the average values of the spin-down rate (<(nu) over dot >) of this pulsar changed in four different states. We investigated the correlation between <(nu) over dot > and W-50, and ascertained that the correlation changed in different <(nu) over dot > states. Moreover, not all the changes in <(nu) over dot > states and correlation can be associated with glitch activities. We examined the long term evolution of gamma-ray flux (0.1-300 GeV) and the pulse profiles corresponding to the four different states using Fermi-LAT Pass 8 (P8R3) data from 2008 August 5 to 2019 October 1. We did not detect a significant change in gamma-ray flux or the pulse profile. Our results suggest that the connection between pulsar rotation and emission is more complex than previously reported for this pulsar.
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资助项目National Key Research and Development Program of China[2016YFA0400804] ; National Key Research and Development Program of China[2017YFA0402602] ; National Key Research and Development Program of China[2018YFA0404603] ; National Key Research and Development Program of China[2018YFA0404703] ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments from Ministry of Finance of China (MOF) ; National Natural Science Foundation of China[11873080] ; National Natural Science Foundation of China[U1831102] ; National Natural Science Foundation of China[U1731238] ; National Natural Science Foundation of China[U1938109] ; National Natural Science Foundation of China[U1838104] ; National Natural Science Foundation of China[11873040] ; National Natural Science Foundation of China[11573010] ; National Natural Science Foundation of China[11661161010] ; National Natural Science Foundation of China[U1631103] ; National Natural Science Foundation of China[U1838102] ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; CAS Light of West China Program[2018-XBQNXZ-B-023] ; CAS Light of West China Program[2018-XBQNXZ-B-025] ; CAS Light of West China Program[2016-QNXZ-B-24] ; Tianshan Youth Program[2018Q039] ; Open Project Program of the Key Laboratory of FAST, NAOC, Chinese Academy of Sciences ; China Postdoctoral Science Foundation[2019M650847] ; 2018 Project of Xinjiang Uygur Autonomous Region of China for Flexibly Fetching in Upscale Talents ; Science and Technology Fund of Guizhou Province[(2016)-4008] ; Science and Technology Fund of Guizhou Province[(2017) 5726-37] ; Commonwealth of Australia ; 2016 Project of Xinjiang Uygur Autonomous Region of China for Flexibly Fetching in Upscale Talent
WOS研究方向Astronomy & Astrophysics
语种英语
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号WOS:000631501800001
资助机构National Key Research and Development Program of China ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments from Ministry of Finance of China (MOF) ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; CAS Light of West China Program ; Tianshan Youth Program ; Open Project Program of the Key Laboratory of FAST, NAOC, Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; 2018 Project of Xinjiang Uygur Autonomous Region of China for Flexibly Fetching in Upscale Talents ; Science and Technology Fund of Guizhou Province ; Commonwealth of Australia ; 2016 Project of Xinjiang Uygur Autonomous Region of China for Flexibly Fetching in Upscale Talent
源URL[http://ir.xao.ac.cn/handle/45760611-7/3946]  
专题脉冲星研究团组
射电天文研究室_利用南山26米射电望远镜观测数据的文章
通讯作者Wang, Na; Yuan, Jian-Ping
作者单位1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
4.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China
5.Nanjing Univ Sci & Technol, Sch Elect & Opt Engn, Nanjing 210094, Peoples R China
6.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
7.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, Beijing 100101, Peoples R China
8.Guizhou Normal Univ, Sch Phys & Elect Sci, Guiyang 550001, Peoples R China
9.Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Peoples R China
推荐引用方式
GB/T 7714		 Dang, Shi-Jun,Wang, Na,Wang, Hui-Hui,et al. Spin-down and emission variations for PSR J0742-2822[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(2):042.
APA Dang, Shi-Jun.,Wang, Na.,Wang, Hui-Hui.,Yuan, Jian-Ping.,Shang, Lun-Hua.,...&Zhou, Zu-Rong.(2021).Spin-down and emission variations for PSR J0742-2822.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(2),042.
MLA Dang, Shi-Jun,et al."Spin-down and emission variations for PSR J0742-2822".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.2(2021):042.

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来源：新疆天文台

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