Abstract
PSR1237 + 25, one of the first pulsars to be discovered1,2, is characterized by a striking five-peaked integrated intensity profile. Like many other pulsars, PSR1237 + 25 also exhibits the puzzling phenomena of drifting subpulses, ‘nulling’ and ‘mode-switching’. The period of pulsation is 1.38 s, but the radio-emission occurs within an 80 ms interval. We have analysed single-pulse data from this pulsar at 430 MHz to throw light on the still obscure mechanism of pulsar emission. We conclude that the behaviour of PSR1237 + 25 can be explained on the polar-cap model if regular short (S) bursts spiralling in towards the magnetic pole are occasionally interrupted by long (L) bursts along the magnetic axis.
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References
Backer, D. C. Nature 228, 752 (1970).
Backer, D. C. Nature 228, 1295 (1970).
Radhakrishnan, V. & Cooke, D. J. Astrophys. Lett. 3, 225 (1969).
Backer, D. C. thesis, Cornell Univ. (1972).
Backer, D. C. Astrophys. J. 182, 245 (1973).
Taylor, J. H., Machester, R. N. & Huguenin, G. R. Astrophys. J. 195, 513 (1975).
Lockwood, E. H. A Book of Curves (Cambridge University Press, 1961).
Thompson, D. W. On Growth and Form (Cambridge University Press, 1971).
Kahn, P. G. K. & Pompea, S. M. Nature 275, 606 (1978).
Backer, D. C. Astrophys. J. 209, 895 (1976).
Unwin, S. C., Readhead, A. C. S., Wilkinson, P. N. & Ewing, M. S. Mon. Not. R. astr. Soc. 182, 711 (1978).
Lyne, A. G. Mon. Not. R. astr. Soc. 153, 27P (1971).
Morris, D., Sieber, N., Ferguson, D.C. & Bartel, N. Astr. Astrophys. (in the press).
Oster, L. & Sieber, W. Astr. Astrophys. 58, 303 (1977).
Sturrock, P. A. Astrophys. J. 164, 529 (1971).
Ruderman, M. A. & Sutherland, P. Astrophys. J. 196, 51 (1975).
Cheng, A. F. & Ruderman, M. A. Astrophys. J. 235, 576 (1980).
Jones, P. B. Mon. Not. R. astr. Soc. 184, 807 (1978).
Erber, T. Rev. Mod. Phys. 38, 626 (1966).
Richtings, R. T. Mon. Not. R. astr. Soc. 176, 249 (1976).
Taylor, J. H., Fowler, L. A. & McCulloch, P. M. Nature 277, 437 (1979).
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Hankins, T., Wright, G. A study of PSR1237 + 25 at 430 MHz. Nature 288, 681–684 (1980). https://doi.org/10.1038/288681a0
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DOI: https://doi.org/10.1038/288681a0
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