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Phase Evolution of the Crab Pulsar between Radio and X-Ray
Yan LL(闫林丽); Ge MY(葛明玉); Zheng SJ(郑世界); Lu FJ(卢方军); Tuo YL(庹攸隶); Tong H(仝号); Zhang SN(张双南); Lu Y(卢宇); Yan, LL; Ge, MY; Yuan, JP; Zheng, SJ; Lu, FJ; Tuo, YL; Tong, H; Zhang, SN; Lu, Y; Han, JL; Du, YJ
2017
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
EISSN1538-4357
Volume845Issue:2Pages:119
SubtypeArticle
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.
Keywordstars: neutron pulsars: individual (PSR B0531+21) X-rays: stars
DOI10.3847/1538-4357/aa7ff6
WOS KeywordENERGY GAMMA-RAYS ; TIMING-EXPLORER ; TELESCOPE ; PACKAGE ; TEMPO2 ; NEBULA ; NOISE
Indexed BySCI ; SCOPUS ; ADS
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000408111400005
ADS Bibcode2017ApJ...845..119Y
ADS URLhttps://ui.adsabs.harvard.edu/abs/2017ApJ...845..119Y
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2017ApJ...845..119Y/citations
AXRIV CODE178
inspireid1617731
Citation statistics
Cited Times:3 [INSPIRE]
Cited Times:3 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/284714
Collection粒子天体物理中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Yan LL,Ge MY,Zheng SJ,et al. Phase Evolution of the Crab Pulsar between Radio and X-Ray[J]. ASTROPHYSICAL JOURNAL,2017,845(2):119.
APA 闫林丽.,葛明玉.,郑世界.,卢方军.,庹攸隶.,...&Du, YJ.(2017).Phase Evolution of the Crab Pulsar between Radio and X-Ray.ASTROPHYSICAL JOURNAL,845(2),119.
MLA 闫林丽,et al."Phase Evolution of the Crab Pulsar between Radio and X-Ray".ASTROPHYSICAL JOURNAL 845.2(2017):119.
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