New pulse profile variability associated with a glitch of PSR J0738-4042
文献类型：期刊论文
| 作者 | Zhou, S. Q.1,2,3,12; Guegercinoglu, E.10,11; Yuan, J. P.2,8 ; Ge, M. Y.8; Yu, C.1,3,12; Zhang, C. M.6,7,11; Zhang, J.4; Feng, Z. W.5; Ye, C. Q.3,12
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| 刊名 | Monthly Notices of the Royal Astronomical Society
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| 出版日期 | 2022-12-01 |
| 卷号 | 519期号:1页码:74-84 |
| ISSN号 | 0035-8711 |
| 关键词 | methods: data analysis stars:neutron pulsars: general pulsars: individual: (PSR J0738-4042) gamma-ray pulsar vortex creep timing observations neutron-stars crab pulsar inclination angle braking indexes magnetic-field radio pulsars state change Astronomy & Astrophysics |
| DOI | 10.1093/mnras/stac3355 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | The close correlation observed between emission state and spin-down rate change of pulsars has many implications both for the magnetospheric physics and the neutron star interior. The middle-aged pulsar PSR J0738-4042, which had been observed to display variations in the pulse profile associated with its spin-down rate change due to external effects, is a remarkable example. In this study, based on the 12.5 yr combined public timing data from UTMOST and Parkes, we have detected a new emission-rotation correlation in PSR J0738-4042 concurrent with a glitch. A glitch that occurred at MJD 57359 (5) (2015 December 3) with delta v/ v similar to 0.36(4) x 10 (-9) is the first glitch event observed in this pulsar, and is probably the underlying cause of the emission-rotation correlation. Unlike the usual post-glitch behaviours, the braking torque on the pulsar has continued to increase o v er 1380 d, corresponding to a significant decrease in (SIC). As for changes in the pulse profile after the glitch, the relative amplitude of the leading component weakens drastically, while the middle component becomes stronger. A combined model of crustquake induced platelet movement and vortex creep response is invoked to account for this rare correlation. In this scenario, magnetospheric state-change is naturally linked to the pulsar-intrinsic processes that give rise to a glitch. |
| 语种 | 英语 |
| WOS记录号 | WOS:000920876000006 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/5151]  |
| 专题 | 脉冲星研究团组 |
| 作者单位 | 1.State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau 999078, China; 2.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Xinjiang 830011, China; 3.School of Physics and Astronomy, Sun Yat-Sen University, Zhuhai, 519082, China; 4.Department of Physics and Electronic Engineering, QiLu Normal University, Jinan 250033, China; 5.School of Physics and Astronomy, China West Normal University, Nanchong, 637009, China 6.University of Chinese Academy of Sciences, School of Physical Sciences, Beijing 100049, China; 7.University of Chinese Academy of Sciences, School of Astronomy and Space Science, Beijing 100049, China; 8.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; 9.Centre for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China; 10.Istanbul University, Faculty of Science, Department of Astronomy and Space Sciences, Beyazıt, 34119, Istanbul, Turkey; |
| 推荐引用方式 GB/T 7714 | Zhou, S. Q.,Guegercinoglu, E.,Yuan, J. P.,et al. New pulse profile variability associated with a glitch of PSR J0738-4042[J]. Monthly Notices of the Royal Astronomical Society,2022,519(1):74-84. |
| APA | Zhou, S. Q..,Guegercinoglu, E..,Yuan, J. P..,Ge, M. Y..,Yu, C..,...&Ye, C. Q..(2022).New pulse profile variability associated with a glitch of PSR J0738-4042.Monthly Notices of the Royal Astronomical Society,519(1),74-84. |
| MLA | Zhou, S. Q.,et al."New pulse profile variability associated with a glitch of PSR J0738-4042".Monthly Notices of the Royal Astronomical Society 519.1(2022):74-84. |
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