PMO OpenIR  > 分子云与恒星形成研究团组
Recent glitches detected in the Crab pulsar
Wang, Jingbo2; Wang, Na1,2; Tong, Hao3; Yuan, Jianping2
2012-08-01
Source PublicationASTROPHYSICS AND SPACE SCIENCE
Volume340Issue:2Pages:307-315
AbstractFrom 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.
KeywordPulsars: General Pulsars: Individual: Psr b0531+21 Stars: Neutron
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s10509-012-1058-x
WOS KeywordNEUTRON-STARS ; BRAKING INDEX ; VELA PULSAR ; MAGNETIC-FIELD ; ACTIVE PULSAR ; TIMING NOISE ; RADIO ; EVOLUTION ; TELESCOPE ; RECOVERY
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000305784100009
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15568
Collection分子云与恒星形成研究团组
Affiliation1.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
Recommended Citation
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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