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Phase Evolution of the Crab Pulsar between Radio and X-Ray
Yan, L. L.1,2,3; Ge, M. Y.1; Yuan, J. P.4; Zheng, S. J.1; Lu, F. J.1; Tuo, Y. L.1,2; Tong, H.4; Zhang, S. N.1; Lu, Y.1; Han, J. L.5; Du, Y. J.3
2017-08-20
Source PublicationASTROPHYSICAL JOURNAL
Volume845Issue:2
AbstractWe study the X-ray phases of the Crab pulsar utilizing the 11-year observations from the Rossi X-ray Timing Explorer, 6-year radio observations from Nanshan Telescope, and the ephemeris from Jodrell Bank Observatory. It is found that the X-ray phases in different energy bands and the radio phases from the Nanshan Telescope show similar behaviors, including long-time evolution and short-time variations. Such strong correlations between the X-ray and radio phases imply that the radio and X-ray timing noises are both generated from the pulsar spin that cannot be well described by the the monthly ephemeris from the Jodrell Bank observatory. When using the Nanshan phases as references to study the X-ray timing noise, it has a significantly smaller variation amplitude and shows no long-time evolution, with a change rate of (-1.1 +/- 1.1)x10(-7) periods per day. These results show that the distance of the X-ray and radio emission regions on the Crab pulsar has no detectable secular change, and it is unlikely that the timing noises resulted from any unique physical processes in the radio or X-ray emitting regions. The similar behaviors of the X-ray and radio timing noises also imply that the variation of the interstellar medium is not the origin of the Crab pulsar's timing noises, which is consistent with the results obtained from the multifrequency radio observations of PSR B1540-06.
SubtypeArticle
KeywordStars: Neutron Pulsars: Individual (Psr b0531+21) X-rays: Stars
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Key Research and Development Program of China(2016YFA0400802) ; National Key Research and Development Program of China(2016YFA0400802) ; National Science Foundation of China(11233001 ; National Science Foundation of China(11233001 ; Strategic Priority Research Program on Space Science ; Strategic Priority Research Program on Space Science ; Chinese Academy of Sciences(XDA04010300 ; Chinese Academy of Sciences(XDA04010300 ; Trainee Program of Qian Xuesen Laboratory of Space Technology ; Trainee Program of Qian Xuesen Laboratory of Space Technology ; 11503027 ; 11503027 ; XDB23000000) ; XDB23000000) ; 11303069) ; 11303069) ; National Key Research and Development Program of China(2016YFA0400802) ; National Key Research and Development Program of China(2016YFA0400802) ; National Science Foundation of China(11233001 ; National Science Foundation of China(11233001 ; Strategic Priority Research Program on Space Science ; Strategic Priority Research Program on Space Science ; Chinese Academy of Sciences(XDA04010300 ; Chinese Academy of Sciences(XDA04010300 ; Trainee Program of Qian Xuesen Laboratory of Space Technology ; Trainee Program of Qian Xuesen Laboratory of Space Technology ; 11503027 ; 11503027 ; XDB23000000) ; XDB23000000) ; 11303069) ; 11303069)
DOI10.3847/1538-4357/aa7ff6
WOS KeywordENERGY GAMMA-RAYS ; TIMING-EXPLORER ; TELESCOPE ; PACKAGE ; TEMPO2 ; NEBULA ; NOISE
Indexed BySCI
Language英语
Funding OrganizationNational Key Research and Development Program of China(2016YFA0400802) ; National Key Research and Development Program of China(2016YFA0400802) ; National Science Foundation of China(11233001 ; National Science Foundation of China(11233001 ; Strategic Priority Research Program on Space Science ; Strategic Priority Research Program on Space Science ; Chinese Academy of Sciences(XDA04010300 ; Chinese Academy of Sciences(XDA04010300 ; Trainee Program of Qian Xuesen Laboratory of Space Technology ; Trainee Program of Qian Xuesen Laboratory of Space Technology ; 11503027 ; 11503027 ; XDB23000000) ; XDB23000000) ; 11303069) ; 11303069) ; National Key Research and Development Program of China(2016YFA0400802) ; National Key Research and Development Program of China(2016YFA0400802) ; National Science Foundation of China(11233001 ; National Science Foundation of China(11233001 ; Strategic Priority Research Program on Space Science ; Strategic Priority Research Program on Space Science ; Chinese Academy of Sciences(XDA04010300 ; Chinese Academy of Sciences(XDA04010300 ; Trainee Program of Qian Xuesen Laboratory of Space Technology ; Trainee Program of Qian Xuesen Laboratory of Space Technology ; 11503027 ; 11503027 ; XDB23000000) ; XDB23000000) ; 11303069) ; 11303069)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000408111400005
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/20127
Collection射电天文研究部
Affiliation1.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Qian Xuesen Lab Space Technol, 104 Youyi Rd, Beijing 100094, Peoples R China
4.Chinese Acad Sci, Xinjiang Astron Observ, Xinjiang 830011, Peoples R China
5.Chinese Acad Sci, Natl Astron Observ, Jia 20 Datun Rd, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Yan, L. L.,Ge, M. Y.,Yuan, J. P.,et al. Phase Evolution of the Crab Pulsar between Radio and X-Ray[J]. ASTROPHYSICAL JOURNAL,2017,845(2).
APA Yan, L. L..,Ge, M. Y..,Yuan, J. P..,Zheng, S. J..,Lu, F. J..,...&Du, Y. J..(2017).Phase Evolution of the Crab Pulsar between Radio and X-Ray.ASTROPHYSICAL JOURNAL,845(2).
MLA Yan, L. L.,et al."Phase Evolution of the Crab Pulsar between Radio and X-Ray".ASTROPHYSICAL JOURNAL 845.2(2017).
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