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Mode switching and subpulse drifting in PSR B0826-34
文献类型：期刊论文
| 作者 | Esamdin, A ; Lyne, AG; Graham-Smith, F; Kramer, M; Manchester, RN; Wu, X
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2005 |
| 卷号 | 356期号:1页码:59-65 |
| 关键词 | radiation mechanisms : non-thermal pulsars : general pulsars : individual : B0826-34 |
| ISSN号 | 0035-8711 |
| 通讯作者 | agl@jb.man.ac.uk |
| 英文摘要 | We present high-quality observations of PSR B0826-34 at 1374 MHz. The emission from this pulsar exhibits strong bursts of pulses followed by long periods of 'null' pulses. When it is strong, the radiation extends throughout the whole pulse period. We show for the first time that there is weak emission during the 'null' phases, which should therefore be considered to be a different mode rather than being null. During this weak mode, the profile is similar to that observed in the strong mode at low radio frequency. Using a phase-tracking method, the pattern of drifting subpulses during the strong mode is seen to be coherent across the whole profile. The drift rate is variable and includes positive and negative values. 13 subpulse bands have been directly observed, covering the whole longitude range. The subpulses and their spacings (P-2) are wider in one half of the profile than those in the other half. This difference, and the variation of observed P-2 within the two regions, can be accounted for if the magnetic pole is inclined to the rotation axis by about 05. These two regions appear to represent radiation from outer and inner cones. The intensity modulation of subpulses in all longitude ranges is related to the magnitude of the drift rate. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 致密天体、高能和基础物理 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | CONAL EMISSION REGION ; EMPIRICAL-THEORY ; PULSAR EMISSION ; REMARKABLE PULSAR ; DISCOVERY ; PROFILES ; GEOMETRY ; NULLS ; BEAMS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000225749300006 |
| 公开日期 | 2013-03-06 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/82]  |
| 专题 | 脉冲星研究团组 新疆天文台_光学天文与技术应用研究室 新疆天文台_其它 |
| 作者单位 | 1.CAS, Natl Astron Observ, Urumqi Observ, Urumqi 830011, Peoples R China 2.Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England 3.CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia 4.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 5.Peking Univ, Chinese Acad Sci, Beijing Joint Astrophys Ctr, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Esamdin, A,Lyne, AG,Graham-Smith, F,et al. Mode switching and subpulse drifting in PSR B0826-34[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2005,356(1):59-65. |
| APA | Esamdin, A,Lyne, AG,Graham-Smith, F,Kramer, M,Manchester, RN,&Wu, X.(2005).Mode switching and subpulse drifting in PSR B0826-34.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,356(1),59-65. |
| MLA | Esamdin, A,et al."Mode switching and subpulse drifting in PSR B0826-34".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 356.1(2005):59-65. |
入库方式： OAI收割
来源：新疆天文台
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