Recent glitches detected in the Crab pulsar

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	Recent glitches detected in the Crab pulsar
	Wang, JB; Wang, N; 仝号;Tong, H; Yuan, JP
刊名	ASTROPHYSICS AND SPACE SCIENCE
	2012
卷号	340 期号:2 页码:307-315
关键词	Pulsars: general Pulsars: individual: PSR B0531+21 Stars: neutron
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.
学科主题	Astronomy & Astrophysics
收录类别	SCI
WOS记录号	WOS:000305784100009
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/223933]
专题	高能物理研究所_粒子天体物理中心
推荐引用方式 GB/T 7714	Wang, JB,Wang, N,仝号；Tong, H,et al. Recent glitches detected in the Crab pulsar[J]. ASTROPHYSICS AND SPACE SCIENCE,2012,340(2):307-315.
APA	Wang, JB,Wang, N,仝号；Tong, H,&Yuan, JP.(2012).Recent glitches detected in the Crab pulsar.ASTROPHYSICS AND SPACE SCIENCE,340(2),307-315.
MLA	Wang, JB,et al."Recent glitches detected in the Crab pulsar".ASTROPHYSICS AND SPACE SCIENCE 340.2(2012):307-315.