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Glitches in southern pulsars
Wang, N1,2,3; Manchester, RN2; Pace, RT2; Bailes, M4; Kaspi, VM5,6; Stappers, BW7; Lyne, AG8
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Timing observations of 40 mostly young pulsars using the ATNF Parkes radio telescope between 1990 January and 1998 December are reported. In total, 20 previously unreported glitches and 10 other glitches were detected in 11 pulsars, These included 12 glitches in PSR J1341-6220, corresponding to a glitch rate of 1.5 glitches per year. We also detected the largest known glitch, in PSR J1614-5047, with Delta nu(g)/nu approximate to 6.5 X 10(-6), where nu = 1/P is the pulse frequency. Glitch parameters were determined both by extrapolating timing solutions to interglitch intervals and by phase-coherent timing fits across the glitch(es), These fits also give improved positions and dispersion measures for many of the pulsars, Analysis of glitch parameters, both from this work and from previously published results, shows that most glitches have a fractional amplitude Delta nu(g)/nu of between 10(-8) and 10(-6). There is no consistent relationship between glitch amplitude and the time since the previous glitch or the time to the following glitch, either for the ensemble or for individual pulsars. As previously recognized, the largest glitch activity is seen in pulsars with ages of order 10(4) yr, but for about 30 per cent of such pulsars, no glitches were detected in the 8-year data span. There is some evidence for a new type of timing irregularity in which there is a significant increase in pulse frequency over a few days, accompanied by a decrease in the magnitude of the slowdown rate. Fits of an exponential recovery to post-glitch data show that for most older pulsars, only a small fraction of the glitch decays. In some younger pulsars a large fraction of the glitch decays, but in others there is very little decay. Apart from the Crab pulsar, there is no clear dependence of recovery time-scale on pulsar age.

KeywordStars : Neutron Pulsars : General
Subject Area致密天体、高能和基础物理
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordHigh-frequency Survey ; Energy Gamma-rays ; Supernova Remnant ; Vela Pulsar ; Giant Glitch ; Millisecond Pulsars ; Timing Observations ; Galactic Plane ; Period Pulsars ; Radio Pulsars
Funding Project脉冲星研究团组
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000089857200011
Funding OrganizationNational Nature Science Foundation (NNSF) of China ; National Science FoundationCAREER award (AST-9875897) ; Alfred P. Sloan ResearchFellowship ; Commonwealth of Australia
Citation statistics
Cited Times:103[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWang, N; Manchester, RN
Affiliation1.CAS, Urumqi Astron Observ, Urumqi 830011, Peoples R China
2.CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia
3.Peking Univ, Dept Geophys, Beijing 100871, Peoples R China
4.Swinburne Univ Technol, Hawthorn, Vic 3122, Australia
5.MIT, Ctr Space Res, Cambridge, MA 02139 USA
6.McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada
7.Australian Natl Univ, Mt Stromlo & Siding Spring Observ, Weston, ACT 2611, Australia
8.Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, N,Manchester, RN,Pace, RT,et al. Glitches in southern pulsars[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2000,317(4):843-860.
APA Wang, N.,Manchester, RN.,Pace, RT.,Bailes, M.,Kaspi, VM.,...&Lyne, AG.(2000).Glitches in southern pulsars.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,317(4),843-860.
MLA Wang, N,et al."Glitches in southern pulsars".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 317.4(2000):843-860.
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