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A study of PSR1237 + 25 at 430 MHz

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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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Authors and Affiliations

  1. National Astronomy and Ionosphere Center, Arecibo Observatory, Arecibo, 00612, Puerto Rico

    T. H. Hankins

  2. Sonderforschungsbereich: Radioastronomie, Astronomische Institute der Universität Bonn, Auf dem Hügel, 71, FRG

    G. A. E. Wright

Authors
  1. T. H. Hankins
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  2. G. A. E. Wright
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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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