NAOC Open IR
Pulsar glitches in a strangeon star model. II. The activity
Wang, W. H.1,2; Lai, X. Y.3; Zhou, E. P.4; Lu, J. G.5; Zheng, X. P.6,7; Xu, R. X.1,2,8
2021-02-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume500Issue:4Pages:5336-5349
AbstractGlitch is supposed to be a useful probe into pulsar's interior, but the underlying physics remains puzzling. The glitch activity may reflect a lower limit of the crustal moment of inertia in conventional neutron star models. Nevertheless, its statistical feature could also be reproduced in the strangeon star model, which is focused here. We formulate the glitch activity of normal radio pulsars under the framework of starquake of solid strangeon star model, the shear modulus of strangeon matter is constrained to be mu similar or equal to 3 x 10(34) erg cm(-3) , consistent with previous work. Nevertheless, about ten times the shift in oblateness accumulated during glitch interval is needed to fulfill the statistical observations. The fact that typical glitch sizes of two rapidly evolving pulsars (the Crab pulsar and PSR B0540-69) are about two orders of magnitude lower than that of the Vela pulsar, significantly lower than the oblateness change they can supply, indicates probably that only a part of oblateness change is relieved when a pulsar is young. The unreleased oblateness and stress may relax as compensation in the following evolution. The small glitch sizes and low glitch activity of the Crab pulsar can be explained simultaneously in this phenomenological model. Finally, we obtain energy release to be Delta E similar to 2.4 x 10(40) erg and Delta E similar to 4.2 x 10(41) erg for typical glitch size of Delta nu/nu similar to 10(-6) (Vela-like) and similar to 10(-8) (Crab-like). The upcoming SKA may test this model through the energy release and the power-law relation between the reduced recovery coefficient Q/vertical bar(nu) over dot vertical bar(1/2) and Delta nu/nu.
Keyworddense matter stars: neutron Pulsars: general
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Hubei Provincial Department of Education ; Hubei Provincial Department of Education ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Hubei Provincial Department of Education ; Hubei Provincial Department of Education ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Hubei Provincial Department of Education ; Hubei Provincial Department of Education ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Hubei Provincial Department of Education ; Hubei Provincial Department of Education
DOI10.1093/mnras/staa3520
WOS KeywordCRAB PULSAR ; EFFECTIVE-MASS ; ENTRAINMENT COEFFICIENT ; CONDUCTION NEUTRONS ; VORTEX CREEP ; CRUST ; SUPERFLUIDITY ; STARQUAKES ; ROTATION
Language英语
Funding ProjectNational Key R&D Program of China[2017YFA0402602] ; National Natural Science Foundation of China[11673002] ; National Natural Science Foundation of China[U1531243] ; National Natural Science Foundation of China[11773011] ; National Natural Science Foundation of China[U1831104] ; Chinese Academy of Sciences[XDB23010200] ; Hubei Provincial Department of Education[D20183002]
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Hubei Provincial Department of Education ; Hubei Provincial Department of Education ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Hubei Provincial Department of Education ; Hubei Provincial Department of Education ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Hubei Provincial Department of Education ; Hubei Provincial Department of Education ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Hubei Provincial Department of Education ; Hubei Provincial Department of Education
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000606297700072
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/79902
Collection中国科学院国家天文台
Corresponding AuthorWang, W. H.; Xu, R. X.
Affiliation1.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
2.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
3.Hubei Univ Educ, Dept Phys & Astron, Wuhan 430205, Peoples R China
4.Max Planck Inst Gravitat Phys, Albert Einstein Inst, Muhknberg 1, D-14476 Postdam Golm, Germany
5.Chinese Acad Sci, CAS Key Lab Fast, NAOC, Beijing 100101, Peoples R China
6.Cent China Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China
7.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430079, Peoples R China
8.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Wang, W. H.,Lai, X. Y.,Zhou, E. P.,et al. Pulsar glitches in a strangeon star model. II. The activity[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,500(4):5336-5349.
APA Wang, W. H.,Lai, X. Y.,Zhou, E. P.,Lu, J. G.,Zheng, X. P.,&Xu, R. X..(2021).Pulsar glitches in a strangeon star model. II. The activity.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,500(4),5336-5349.
MLA Wang, W. H.,et al."Pulsar glitches in a strangeon star model. II. The activity".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 500.4(2021):5336-5349.
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