On high brightness temperature of pulsar giant pulses

TL;DR

This paper proposes that the high brightness temperature of pulsar giant pulses can be explained by a cavity-resonator model of the polar gap, incorporating new electromagnetic wave generation mechanisms and spectral features.

Contribution

It introduces a novel cavity-resonator model of the polar gap that accounts for various observed properties of giant pulses and predicts new electromagnetic phenomena.

Findings

Explanation of giant pulse properties via cavity-resonator model

Identification of high frequency spectral breaks related to gap processes

Potential method to determine pulsar magnetic fields from spectral features

Abstract

A wide range of events observed at the giant pulses (high energy density, observed localization of giant pulses (GPs) relative to the average pulse, fine structure of GPs with duration up to some nanoseconds, observed circular polarization of GPs, correlation between the GP phase and the phase of the hard pulsar emission X-ray and gamma) can be explained from the viewpoint that the internal polar gap is a cavity-resonator stimulated by discharges and radiating through the breaks in the magnetosphere. The new results in this field [the electromagnetic (em) waves generation in the gap in the process of longitudinal acceleration in the electric field vanishing on the star surface, high frequency break in the spectrum as a result of switching off this generation, formation in this process a power-low spectrum with a high frequency (hf) break, the possibility determination of pulsar magnetic field by the hf break position, the difference between main pulse and inter pulse mechanism generation, quantization of em tornado rotation in the gap and appearance of the bands in the inter pulse spectrum, influence the high energy density in the gap on pair generation and position of the dead line in pulsars] are added in the intermediate epilogue.