Variations of P-2 in subpulse drifting pulsars
文献类型：期刊论文
| 作者 | Yuen, R.1,2,3 ; Melrose, D. B.3; Samsuddin, M. A.4; Tu, Z. Y.1; Han, X. H.1
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2016-06-11 |
| 卷号 | 459期号:1页码:603-609 |
| 通讯作者邮箱 | ryuen@physics.usyd.edu.au |
| 关键词 | radiation mechanisms: non-thermal pulsars: general |
| ISSN号 | 0035-8711 |
| 通讯作者 | Yuen, R. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | RADIO-EMISSION ALTITUDE ; FREQUENCY-DEPENDENCE ; MAGNETIC-FIELD ; PSR B0031-07 ; MAGNETOSPHERE ; RADIATION ; GEOMETRY ; POLARIZATION ; MODULATION ; PULSES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000376386600047 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/1398]  |
| 专题 | 脉冲星研究团组 新疆天文台_射电天文研究室 新疆天文台_应用天文研究室 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：新疆天文台
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