Detection of the fine structure of the pulsar J0953+0755 radio emission in the decametre wave range

TL;DR

This study investigates the fine structure of pulsar J0953+0755's radio emission at decametre wavelengths, revealing two distinct scales of structure and differences in dispersion measures, suggesting complex propagation effects.

Contribution

The paper identifies two scales of fine structure in pulsar radio emission and links dispersion measure differences to propagation effects in the pulsar's environment.

Findings

Discovered two scales of fine structure in pulsar emission.

Identified differences in dispersion measures between components.

Estimated the short-scale structure time of 1 ms.

Abstract

In this paper the anomalous intense pulse of the PSR J0953+0755 was studied in decametre wavelength range. For this pulse two scales of fine structure were discovered. The long-scale structure consists of four components, where the visible dispersion measures of even and odd components are different. The obtained time-scale of the short fine structure is 1 ms. The difference in visible dispersion measure can be caused by propagation of two normal modes of the pulsar radiation and irregularities of electron concentration in the space near the neutron star like upper layers of magnetosphere and pulsar wind.