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arXiv · 2203.05572

A new model for nulling and moding in radio pulsars

J. Dyks
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Abstract

Single pulse behaviour of radio pulsars is usually interpreted in terms of the ExB drift of a radio beam. It is shown that antisymmetric arrangement of the radio-bright zones can produce several types of observed single pulse phenomena: the half-cycle jump in subpulse modulation phase, left-right-middle subpulse sequence and switching between the core-dominated and cone-dominated pulsation modes. The geometry can also produce nulling, both sporadic and intermodal. The model implies that the radio-quiet intervals that separate the main pulse and interpulse in PSR B0826-34 correspond to azimuthal breaks in the radio beam, instead of breaks in colatitude.

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J. Dyks. 2022-03-10. A new model for nulling and moding in radio pulsars. https://doi.org/10.1017/s1743921322000370

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