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Variations of P-2 in subpulse drifting pulsars
Yuen, R.1,2,3; Melrose, D. B.3; Samsuddin, M. A.4; Tu, Z. Y.1; Han, X. H.1
2016-06-11
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume459Issue:1Pages:603-609
Contribution Rank1
Abstract

We develop a model for subpulse separation period, P-2, taking into account both the apparent motion of the visible point as a function of pulsar phase, Psi, and the possibility of abrupt jumps between different rotation states in non-corotating pulsar magnetospheres. We identify three frequencies: (i) the spin frequency of the star, (ii) the drift frequency of the magnetospheric plasma in the source region and (iii) the angular frequency of the visible point around its trajectory. We show how the last of these, which is neglected in traditional models by implicitly assuming the line of sight through the centre of the star, affects the interpretation of P-2. We attribute the subpulse structure to emission frommantinodes distributed uniformly in azimuthal angle about the magnetic axis. We showthat variations of P-2 as a function of rotational phase or observing frequency arise naturally when the motion of the visible point is taken into account. We discuss possible application of our model in signifying overall field-line distortion at the emitting region. Abrupt changes in P-2 can occur during state switching in the magnetosphere. We demonstrate that the unique value of P-2 in each rotation state can be used, in principle, to relate the rotation state of the magnetospheres to subpulse drifting.

Correspondent Emailryuen@physics.usyd.edu.au
KeywordRadiation Mechanisms: Non-thermal Pulsars: General
SubtypeArticle
DOI10.1093/mnras/stw679
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordRadio-emission Altitude ; Frequency-dependence ; Magnetic-field ; Psr B0031-07 ; Magnetosphere ; Radiation ; Geometry ; Polarization ; Modulation ; Pulses
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000376386600047
Funding OrganizationNSFC(11573059) ; Technology Foundation for Selected Overseas Chinese Scholar, Ministry of Personnel of China ; West Light Foundation of the Chinese Academy of Sciences(XBBS-2014-21) ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences(XDB09000000) ; University of Malaya's HIR grant(UM.S/625/3/HIR/28) ; Program of the Light in China's Western Region (LCRW)(2015-XBQN-B-03)
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/1398
Collection射电天文研究室_脉冲星研究团组
射电天文研究室
应用天文研究室
Corresponding AuthorYuen, R.
Affiliation1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Xinjiang, Peoples R China
3.Univ Sydney, Sch Phys, SIfA, Sydney, NSW 2006, Australia
4.Univ Malaya, Kuala Lumpur 50603, Malaysia
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yuen, R.,Melrose, D. B.,Samsuddin, M. A.,et al. Variations of P-2 in subpulse drifting pulsars[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,459(1):603-609.
APA Yuen, R.,Melrose, D. B.,Samsuddin, M. A.,Tu, Z. Y.,&Han, X. H..(2016).Variations of P-2 in subpulse drifting pulsars.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,459(1),603-609.
MLA Yuen, R.,et al."Variations of P-2 in subpulse drifting pulsars".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 459.1(2016):603-609.
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