On the triple pulsar profiles generated by ordinary mode

TL;DR

This paper presents a detailed theoretical analysis of how ordinary wave refraction in pulsar magnetospheres explains the central peak in three-humped radio profiles, aligning well with observed pulsar data.

Contribution

A comprehensive theory of secondary particle generation and wave refraction in pulsar magnetospheres is developed, explaining the formation of triple pulse profiles.

Findings

Refraction of O-mode explains central peak in profiles

Numerical models reproduce observed pulsar profiles

Dependence of secondary particles on magnetic axis distance is key

Abstract

A detailed study of the refraction of an ordinary wave in the magnetosphere of radio pulsars was carried out. For this, a consistent theory of the generation of secondary particles was constructed, which essentially takes into account the dependence of the number density and the energy spectrum of secondary particles on the distance from the magnetic axis. This made it possible to determine with high accuracy the refraction of the ordinary O-mode in the central region of the outflowing plasma, which makes it possible to explain the central peak of three-humped mean radio profiles. As shown by detailed numerical calculations, in most cases it is possible to reproduce quite well the observed mean profiles of radio pulsars.