A new model for nulling and moding in radio pulsars. Issue Volume 16:Issue S363(2020) (June 2020)

• Record Type: Journal Article
• Authors: Dyks, Jaroslaw
• Editors: Troja, Eleonora; Baring, Matthew G.
• Is Part Of: Proceedings of the International Astronomical Union. Volume 16:Issue S363(2020)
• Page Start: 340
• Page End: 341
• Publication Date: 2020-06
• Subjects: pulsars: general -- pulsars: individual (PSR B0826−34, PSR B1237+25, PSR B1919+21); Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921322000370
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: 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.