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On the variable timing behavior of PSR B0540-69: an almost excellent example to study the pulsar braking mechanism
Kou, Fei-Fei1,2; Ou, Zi-Wei1,2; Tong, Hao1
2016-05-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume16Issue:5Pages:79
Contribution Rank1
Abstract

PSR B0540-69 has a braking index measurement in its persistent state: n = 2.129 +/- 0.012. Recently, it has been reported to have changes in its spin-down state: a sudden 36% increase in the spindown rate. Combining the persistent state braking index measurement with different spin-down states, PSR B0540-69 is more powerful than intermittent pulsars in constraining pulsar spin-down models. The pulsar wind model is applied to explain the variable timing behavior of PSR B0540-69. The braking index of PSR B0540-69 in its persistent state results from the combined effect of magnetic dipole radiation and particle wind. The particle density reflects the magnetospheric activity in real-time and may be responsible for the changing spin-down behavior. Corresponding to the 36% increase in the spin-down rate of PSR B0540-69, the relative increase in the particle density is 88% in the vacuum gap model. The braking index calculated with the model in the new state is n = 1.79. Future observations that measure the braking index of PSR B0540-69 in the new spin-down state will be very powerful in distinguishing between different pulsar spin-down models and different particle acceleration models in the wind braking scenario. The variable timing behavior of PSR J1846-0258 is also understandable in the pulsar wind model.

Correspondent Emailtonghao@xao.ac.cn
KeywordPulsars: General Pulsars: Individual (Psr B0540-69 Stars: Neutron Wind Psr J1846-0258)
SubtypeArticle
DOI10.1088/1674-4527/16/5/079
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordRotation-powered Pulsar ; X-ray-emission ; Spin-down ; Intermittent Pulsars ; Magnetic-field ; Neutron-stars ; Active Pulsar ; Crab Pulsar ; Index ; Radio
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000375793000010
Funding OrganizationWest Light Foundation of CAS(LHXZ 201201) ; 973 Program(2015CB857100) ; Qing Cu Hui of CAS
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/1392
Collection射电天文研究室_脉冲星研究团组
射电天文研究室
110米口径全可动射电望远镜(QTT)_110米大口径全可动射电望远镜关键技术研究(973项目)_课题1:大样本射电天体的观测和前沿问题研究
Corresponding AuthorTong, Hao
Affiliation1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Kou, Fei-Fei,Ou, Zi-Wei,Tong, Hao. On the variable timing behavior of PSR B0540-69: an almost excellent example to study the pulsar braking mechanism[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(5):79.
APA Kou, Fei-Fei,Ou, Zi-Wei,&Tong, Hao.(2016).On the variable timing behavior of PSR B0540-69: an almost excellent example to study the pulsar braking mechanism.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(5),79.
MLA Kou, Fei-Fei,et al."On the variable timing behavior of PSR B0540-69: an almost excellent example to study the pulsar braking mechanism".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.5(2016):79.
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