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Mode switching and subpulse drifting in PSR B0826-34
Esamdin, A1,2,4,5; Lyne, AG2; Graham-Smith, F2; Kramer, M2; Manchester, RN3; Wu, X1,4
2005
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume356Issue:1Pages:59-65
Contribution Rank1
Abstract

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.

KeywordRadiation Mechanisms : Non-thermal Pulsars : General Pulsars : Individual : B0826-34
SubtypeArticle
Subject Area致密天体、高能和基础物理
DOI10.1111/j.1365-2966.2004.08444.x
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordConal Emission Region ; Empirical-theory ; Pulsar Emission ; Remarkable Pulsar ; Discovery ; Profiles ; Geometry ; Nulls ; Beams
Funding Project脉冲星研究团组
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000225749300006
Citation statistics
Cited Times:47[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/82
Collection射电天文研究室_脉冲星研究团组
光学天文与技术应用研究室
其它
Corresponding AuthorLyne, AG
Affiliation1.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
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
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.
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