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Pulsar nulling and mode changing
Wang, N.1,2,3; Manchester, R. N.2; Johnston, S.2,3
Contribution Rank1

With its relatively long observation time per pointing, the Parkes multibeam survey was effective in detecting nulling pulsars. We have made 2-h observations of 23 pulsars which showed evidence for pulse nulling or mode changing in the survey data. Because of the low flux density of these pulsars, in most cases averaging times of between 10 and 60 s were necessary and so this analysis is insensitive to very short nulls. Seven of the pulsars had null fractions of more than 40 per cent with the largest having a lower limit of 95 per cent. Mode changes were observed in six pulsars with clear relationships between nulling and mode changing in some cases. Combined with earlier results, the data suggest that large null fractions are more related to large characteristic age than to long pulse period. The observations suggest that nulling and mode changing are different manifestations of the same phenomenon.

KeywordRadiation Mechanisms : Non-thermal Pulsars : General
Subject Area致密天体、高能和基础物理
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordGiant Pulses ; Intensity Measurements ; Millisecond Pulsars ; Drifting Subpulses ; Radio-emission ; Galactic Plane ; Discovery ; Telescope ; Transient ; Bursts
Funding Project脉冲星研究团组
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000246367000037
Funding OrganizationCommonwealth Government
Citation statistics
Cited Times:148[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWang, N.
Affiliation1.NAOC, Urumqi Observ, Xinjiang 830011, Peoples R China
2.CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia
3.Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, N.,Manchester, R. N.,Johnston, S.. Pulsar nulling and mode changing[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2007,377(3):1383-1392.
APA Wang, N.,Manchester, R. N.,&Johnston, S..(2007).Pulsar nulling and mode changing.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,377(3),1383-1392.
MLA Wang, N.,et al."Pulsar nulling and mode changing".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 377.3(2007):1383-1392.
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