Origin of pulsar pulse fine structure

TL;DR

This paper presents a new numerical model explaining how pulsar pulse fine structures can be detected at low frequencies, accounting for propagation effects through the interstellar medium, and aligns well with observational data.

Contribution

The paper introduces a novel numerical simulation model that explains the detectability of pulsar pulse fine structures at low frequencies considering ISM effects.

Findings

Fine structure detectable at low frequencies

Simulation results align with observational data

Explains deficit of scattering measure at decameter range

Abstract

We give a new numerical model of pulsar pulse radiation through the interstellar medium (ISM) considering the propagation effects. It explains the deficit of a scattering measure at the decameter range of frequencies that leads to the possibility of detecting the pulsar pulse fine structure. The results of numerical simulation confirm that the fine structure may be detected at low frequencies and this is qualitatively agreed with the observational data.