Multifrequency evolution of the Integrated pulse profile of radio pulsars by implementing the inverse Compton mechanism

TL;DR

This paper proposes a model combining curvature radiation and inverse Compton scattering to explain the emergence of new pulsar emission components at higher radio frequencies, matching observational data.

Contribution

It introduces a novel combined mechanism of curvature radiation and inverse Compton scattering to explain pulsar profile evolution across frequencies.

Findings

Successfully reproduces multi-frequency pulse profiles

Identifies inverse Compton scattering as key to high-frequency components

Provides parameter space for matching observations

Abstract

The Main Aim of this paper is to explain the emergence of new components of pulsars at higher radio bands by implementing the Inverse Compton Scattering Mechanism. From pulsar radio observation, it is seen that a couple of pulsars reveal new emission components at higher radio frequencies, although they show single-component emission at lower frequencies. We develop a brief outline, fostering inverse Compton scattering (ICS) of the low-frequency radio photons as a vulnerable source of scattering, susceptible to explaining the evolution of new components of some radio pulsars at higher bands. We couple the conventional curvature radiation (CR) mechanism and ICS, and suggest that the spectral convolution of the flux component individually from CR and the modulated template due to the ICS scattered component can be combined to reproduce such signatures associated with the diverse morphology of the integrated pulse profile. We reproduce the beam frequency diagram, the geometrical variation of different parameters of the emission geometry, as well as the multi-frequency evolution from theory. We have suitably tuned the input parameter space and given the combination of parameters that can tune to a particular scattered frequency in tabulated form. We conclude that ICS may be a responsible process for describing the emergence of new components in higher radio emission bands.