Phase Evolution of the Crab Pulsar between Radio and X-Ray
文献类型：期刊论文
| 作者 | Yan LL(闫林丽) ; Ge MY(葛明玉); Zheng SJ(郑世界); Tuo YL(庹攸隶); Yan, LL; Ge, MY; Yuan, JP; Zheng, SJ; Lu, FJ; Tuo, YL
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2017 |
| 卷号 | 845期号:2页码:119 |
| 关键词 | stars: neutron pulsars: individual (PSR B0531+21) X-rays: stars |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aa7ff6 |
| 文献子类 | Article |
| 英文摘要 | We 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. |
| 电子版国际标准刊号 | 1538-4357 |
| WOS关键词 | ENERGY GAMMA-RAYS ; TIMING-EXPLORER ; TELESCOPE ; PACKAGE ; TEMPO2 ; NEBULA ; NOISE |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000408111400005 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284714]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 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.,庹攸隶.,Yan, LL.,...&卢方军.(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. |
入库方式： OAI收割
来源：高能物理研究所
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