Discovery of Delayed Spin-up Behavior Following Two Large Glitches in the Crab Pulsar, and the Statistics of Such Processes
文献类型：期刊论文
| 作者 | Ge,M. Y.3; Zhang,S. N.3,4; Lu,F. J.3; Li,T. P.3,4,5; Yuan,J. P.6,7; Zheng,X. P.8; Huang,Y.3; Zheng,S. J.3; Chen,Y. P.3; Chang,Z.3 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 896期号:1 |
| ISSN号 | 0004-637X |
| 关键词 | Neutron stars Rotation powered pulsars Neutron star cores Nuclear astrophysics |
| DOI | 10.3847/1538-4357/ab8db6 |
| 英文摘要 | Abstract Glitches correspond to sudden jumps of rotation frequency (ν) and its derivative ( ) of pulsars, the origin of which remains not well understood yet, partly because the jump processes of most glitches are not well time-resolved. There are three large glitches of the Crab pulsar, detected in 1989, 1996, and 2017, which were found to have delayed spin-up processes before the normal recovery processes. Here we report two additional glitches of this pulsar that occurred in 2004 and 2011 for which we discovered delayed spin-up processes, and present refined parameters of the largest glitch, which occurred in 2017. The initial rising time of the glitch is determined as <0.48 hr. The two glitches that occurred in 2004 and 2011 had delayed spin-up time scales (τ1) of 1.7?±?0.8 days and 1.6?±?0.4 days, respectively. We also carried out a statistical study of these five glitches with observed spin-up processes. We find that the Δν versus relation of these five glitches is similar to those with no detected delayed spin-up process, indicating that they are similar to the others in nature except that they have larger amplitudes. For these five glitches, the amplitudes of the delayed spin-up process ( ) and recovery process (Δνd2), their time scales (τ1, τ2), and permanent changes in spin frequency (Δνp) and total frequency step (Δνg) have positive correlations. From these correlations, we suggest that the delayed spin-up processes are common for all glitches, but are too short and thus difficult to be detected for most glitches. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-896-1-AB8DB6 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/63497]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.National Defense University of Science and Technology, Changsha, People's Republic of China 2.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, People's Republic of China 3.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China zhangsn@ihep.ac.cn 4.University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, People's Republic of China 5.Department of Astronomy, Tsinghua University, Beijing 100084, People's Republic of China 6.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Xinjiang 830011, People's Republic of China 7.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, 100012, People's Republic of China 8.Institute of Astrophysics, Central China Normal University, Hubei, People's Republic of China 9.School of Physics and Technology, Wuhan University, Hubei, People's Republic of China 10.Istanbul University, Science Faculty, Department of Astronomy and Space Sciences, Beyaz?t, 34119, Istanbul, Turkey |
| 推荐引用方式 GB/T 7714 | Ge,M. Y.,Zhang,S. N.,Lu,F. J.,et al. Discovery of Delayed Spin-up Behavior Following Two Large Glitches in the Crab Pulsar, and the Statistics of Such Processes[J]. The Astrophysical Journal,2020,896(1). |
| APA | Ge,M. Y..,Zhang,S. N..,Lu,F. J..,Li,T. P..,Yuan,J. P..,...&Zhu,Y..(2020).Discovery of Delayed Spin-up Behavior Following Two Large Glitches in the Crab Pulsar, and the Statistics of Such Processes.The Astrophysical Journal,896(1). |
| MLA | Ge,M. Y.,et al."Discovery of Delayed Spin-up Behavior Following Two Large Glitches in the Crab Pulsar, and the Statistics of Such Processes".The Astrophysical Journal 896.1(2020). |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。