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Spin-down and emission variations for PSR J0742-2822
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; Yan, Wen-Ming1,3; Wang, Jing-Bo1,3; Wen, Zhi-Gang1,3; Bai, Jun-Tao8,9; Liu, Zhi-Yong1,3; Zhou, Zu-Rong1,2
2021-03-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume21Issue:2Pages:042
Contribution Rank1
AbstractPSR 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.
Keywordpulsars general stars pulsar methods timing
DOI10.1088/1674-4527/21/2/42
URL查看原文
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000631501800001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Funding OrganizationNational 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
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Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/3947
Collection射电天文研究室_脉冲星研究团组
Corresponding AuthorWang, Na; Yuan, Jian-Ping
Affiliation1.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
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
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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