Phase evolution of the crab pulsar between radio and x-ray
文献类型：期刊论文
| 作者 | 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 |
| 刊名 | The astrophysical journal
 |
| 出版日期 | 2017-08-18 |
| 卷号 | 845期号:2 |
| ISSN号 | 0004-637X |
| 关键词 | Stars: neutron Pulsars: individual (psr b0531+21) X-rays: stars |
| DOI | 10.3847/1538-4357/aa7ff6 |
| 英文摘要 | Abstract 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)?×?10?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 multi-frequency radio observations of psr b1540?06. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-845-2-AA7FF6 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2175712 |
| 专题 | 高能物理研究所 |
| 作者单位 | 1.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; yanlinli@ihep.ac.cn 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.Qian Xuesen Laboratory of Space Technology, No. 104, Youyi Road, Haidian District, Beijing 100094, China 4.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China 5.National Astronomical Observatory, Chinese Academy of Sciences, Jia 20 Datun Road, Beijing 100012, China |
| 推荐引用方式 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]. The 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.The astrophysical journal,845(2). |
| MLA | Yan,L. L.,et al."Phase evolution of the crab pulsar between radio and x-ray".The astrophysical journal 845.2(2017). |
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