Single pulse behaviour of radio pulsars is usually interpreted in terms of the E × B 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.
- Pub Date:
- pulsars: general;
- pulsars: individual (PSR B0826−34;
- PSR B1237+25;
- PSR B1919+21);
- Astrophysics - High Energy Astrophysical Phenomena
- 2 pages, 1 figure, Proceedings IAU Symposium No. 363, 2022, Neutron Star Astrophysics at the Crossroads: Magnetars and the Multimessenger Revolution, E. Troja &