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Two types of glitches in a solid quark star model
Zhou, E. P.1,2; Lu, J. G.1,2; Tong, H.3; Xu, R. X.1,2,4
2014-09-21
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume443Issue:3Pages:2705-2710
Contribution Rank3
AbstractGlitch (sudden spin-up) is a common phenomenon in pulsar observations. However, the physical mechanism of glitch is still a matter of debate because it depends on the puzzle of pulsar's inner structure, i.e. the equation of state of dense matter. Some pulsars (e.g. Vela like) show large glitches (Delta nu/nu similar to 10(-6)) but release negligible energy, whereas the large glitches of AXPs/SGRs (anomalous X-ray pulsars/soft gamma repeaters) are usually (but not always) accompanied with detectable energy releases manifesting as X-ray bursts or outbursts. We try to understand this aspect of glitches in a starquake model of solid quark stars. There are two kinds of glitches in this scenario: bulk-invariable (type I) and bulk-variable (type II) ones. The total stellar volume changes (and then energy releases) significantly for the latter but not for the former. Therefore, glitches accompanied with X-ray bursts (e.g. that of AXP/SGRs) could originate from type II starquakes induced probably by accretion, while the others without evident energy release (e.g. that of Vela pulsar) would be the result of type I starquakes due to, simply, a change of stellar ellipticity.
KeywordDense Matter Stars: Magnetar Stars: Neutron Pulsars: General
SubtypeArticle
DOI10.1093/mnras/stu1370
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordNEUTRON-STAR ; VELA PULSAR ; 1E 2259+586 ; QUAKES ; OUTBURST
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000342920400060
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/587
Collection射电天文研究室_脉冲星研究团组
射电天文研究室
Affiliation1.Peking Univ, State Key Lab Nucl Sci & Technol, Beijing 100871, Peoples R China
2.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
4.Peking Univ, Kavil Inst Astron & Astrophys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Zhou, E. P.,Lu, J. G.,Tong, H.,et al. Two types of glitches in a solid quark star model[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,443(3):2705-2710.
APA Zhou, E. P.,Lu, J. G.,Tong, H.,&Xu, R. X..(2014).Two types of glitches in a solid quark star model.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,443(3),2705-2710.
MLA Zhou, E. P.,et al."Two types of glitches in a solid quark star model".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 443.3(2014):2705-2710.
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