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Recent glitches detected in the Crab pulsar
Wang, Jingbo2; Wang, Na1,2; Tong, Hao3; Yuan, Jianping2
2012-08-01
发表期刊ASTROPHYSICS AND SPACE SCIENCE
卷号340期号:2页码:307-315
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.
文章类型Article
关键词Pulsars: General Pulsars: Individual: Psr b0531+21 Stars: Neutron
WOS标题词Science & Technology ; Physical Sciences
DOI10.1007/s10509-012-1058-x
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
语种英语
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000305784100009
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文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/15639
专题分子云与恒星形成研究团组
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
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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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