Recent glitches detected in the Crab pulsar
文献类型：期刊论文
| 作者 | Wang, Jingbo2 ; Wang, Na1,2; Tong, Hao3; Yuan, Jianping2
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| 刊名 | ASTROPHYSICS AND SPACE SCIENCE
 |
| 出版日期 | 2012-08-01 |
| 卷号 | 340期号:2页码:307-315 |
| 关键词 | Pulsars: general Pulsars: individual: PSR B0531+21 Stars: neutron |
| ISSN号 | 0004-640X |
| 通讯作者 | na.wang@uao.ac.cn |
| 英文摘要 | From 2000 to 2010, monitoring of radio emission from the Crab pulsar at Xinjiang Observatory detected a total of nine glitches. The occurrence of glitches appears to be a random process as described by previous researches. A persistent change in pulse frequency and pulse frequency derivative after each glitch was found. There is no obvious correlation between glitch sizes and the time since last glitch. For these glitches Delta nu (p) and span two orders of magnitude. The pulsar suffered the largest frequency jump ever seen on MJD 53067.1. The size of the glitch is similar to 6.8x10(-6) Hz, similar to 3.5 times that of the glitch occurred in 1989 glitch, with a very large permanent changes in frequency and pulse frequency derivative and followed by a decay with time constant similar to 21 days. The braking index presents significant changes. We attribute this variation to a varying particle wind strength which may be caused by glitch activities. We discuss the properties of detected glitches in Crab pulsar and compare them with glitches in the Vela pulsar. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 致密天体、高能和基础物理 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | NEUTRON-STARS ; BRAKING INDEX ; VELA PULSAR ; MAGNETIC-FIELD ; ACTIVE PULSAR ; TIMING NOISE ; RADIO ; EVOLUTION ; TELESCOPE ; RECOVERY |
| 收录类别 | SCI |
| 资助信息 | NSFC (10673021); Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX2-YW-T09); National Basic Research Program of China (973 Program 2009CB824800); West Light Foundation of CAS (No. XBBS201021) |
| 原文出处 | http://link.springer.com/journal/10509 |
| 语种 | 英语 |
| WOS记录号 | WOS:000305784100009 |
| 公开日期 | 2014-12-12 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/409]  |
| 专题 | 脉冲星研究团组 射电天文研究室_利用南山26米射电望远镜观测数据的文章 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jingbo,Wang, Na,Tong, Hao,et al. Recent glitches detected in the Crab pulsar[J]. ASTROPHYSICS AND SPACE SCIENCE,2012,340(2):307-315. |
| APA | Wang, Jingbo,Wang, Na,Tong, Hao,&Yuan, Jianping.(2012).Recent glitches detected in the Crab pulsar.ASTROPHYSICS AND SPACE SCIENCE,340(2),307-315. |
| MLA | Wang, Jingbo,et al."Recent glitches detected in the Crab pulsar".ASTROPHYSICS AND SPACE SCIENCE 340.2(2012):307-315. |
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来源：新疆天文台
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