Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-17T19:52:49.825Z Has data issue: false hasContentIssue false
  • English
  • Français

Testing the relationship between nulling, drifting and mode-changing

Published online by Cambridge University Press:  20 March 2013

Bhal Chandra Joshi
Bhal Chandra Joshi*
Affiliation:
National Centre for Radio Astrophysics (TIFR), P. Bag 3, Ganeshkhind, Pune - 411007, India email: bcj@ncra.tifr.res.in
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Recent observations, suggesting that subpulse drifting, pulse nulling and profile mode-changes are related phenomena, are reviewed and it is argued that these are associated with global changes in the magnetosphere. Long simultaneous multi-frequency observations are useful to test this premise as is illustrated by the preliminary results from a recent study of PSR B0031–07, B0809+74 and B2319+60. Such observations for a larger sample of pulsars will be useful to constrain recent models, invoking global changes in the pulsar magnetosphere, proposed to explain observations demonstrating association of spin-down changes with profile mode-changes.

Keywords

radiation mechanisms: generalpulsars: generalpulsars: B0031–07pulsars: B0809+74pulsars: B2319+60
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S291: Neutron Stars and Pulsars: Challenges and Opportunities after 80 years , August 2012 , pp. 414 - 416
Copyright
Copyright © International Astronomical Union 2013

References

Gajjar, V.et al. in prep.Google Scholar
Joshi, B. C. & Vivekanand, M. 2000, MNRAS, 316, 716CrossRefGoogle Scholar
Joshi, B. C.et al. in prep.Google Scholar
Kramer, M., Lyne, A. G., O'Brien, J. T., Jordan, C. A., & Lorimer, D. R. 2006, Science, 312, 549Google Scholar
Lyne, A. G. 1971, MNRAS, 153, 27CrossRefGoogle Scholar
Lyne, A. G. & Ashworth, M. 1983, MNRAS, 204, 519CrossRefGoogle Scholar
Lyne, A. G., Hobbs, G., Kramer, M., Stairs, I., & Stappers, B. 2010, Science, 329, 408Google Scholar
Ruderman, Sutherland 1975, ApJ, 196, 51Google Scholar
Timokhin, A. N. 2010, MNRAS, 408, 41Google Scholar
Vivekanand, M. & Joshi, B. C. 1997, ApJ, 477, 431Google Scholar
Wang, N, Manchester, R. N., Johnston, 2007, MNRAS, 377, 1383CrossRefGoogle Scholar
Wright, G. A. E. & Fowler, L. A. 1981, A&A, 101, 356Google Scholar