The plasma emission model of RBS1774

TL;DR

This paper develops a self-consistent plasma emission model for RBS1774, explaining its optical and X-ray emissions through cyclotron instability and synchrotron radiation, aligning well with observational data.

Contribution

It introduces a novel model combining cyclotron instability and synchrotron emission to interpret RBS1774's spectral features, including the 0.7 keV feature.

Findings

Spectral energy distribution matches XMM-Newton data

Explains the 0.7 keV spectral feature

Provides a self-consistent emission mechanism for RBS1774

Abstract

In the present paper we construct a self-consistent theory, interpreting the observational properties of RBS1774. It is well known that the distribution function of relativistic particles is one-dimensional at the pulsar surface. However, cyclotron instability causes an appearance of transverse momenta of relativistic electrons, which as a result, start to radiate in the synchrotron regime. We study the process of the quasi-linear diffusion developed by means of the cyclotron instability on the basis of the Vlasov's kinetic equation. This mechanism provides generation of measured optical and X-ray emission on the light cylinder lengthscales. A different approach of the synchrotron theory is considered, giving the spectral energy distribution that is in a good agreement with the XMM-Newton observational data. We also provide the possible explanation of the spectral feature at 0.7keV, in the framework of the model.