Inverse Compton Scattering of Radiation from a Central Source as a Possible Mechanism for the Formation of X-Ray Radiation from Kiloparsec Jets of Core-Dominated Quasars

TL;DR

This paper explores inverse Compton scattering of photons from a central source as a potential explanation for X-ray emission in quasar jets, challenging the widely used cosmic microwave background model.

Contribution

It proposes and evaluates a new mechanism involving central source photons for X-ray production in kiloparsec jets, supported by observational data and gamma-ray flux estimates.

Findings

Predicted gamma-ray fluxes are below Fermi-LAT upper limits.

The mechanism aligns with multiwavelength observational data.

Estimates of jet orientation angles were obtained.

Abstract

For the interpretation of X-ray radiation from kiloparsec jets of quasars, the inverse Compton scattering of the cosmic microwave background has been widely used for almost 20 years. A recent analysis of the Fermi-LAT observational data showed that this assumption is inapplicable for jets of several quasars. In this paper, we consider the inverse Compton scattering of photons from a central source as a possible mechanism for the formation of X-ray radiation from kiloparsec jets of the quasars PKS 0637-752, 3C 273, PKS 1510-089, and PKS 1045-188. Estimates for the angle between the line of sight and the velocity of kiloparsec-scale jets are obtained. The predicted gamma-ray flux for all objects turned out to be below the upper limit on the flux from a kiloparsec jet obtained from the Fermi-LAT data. It is shown that our assumption about the mechanism of kiloparsec jets X-ray radiation is consistent with all data of multiwavelength observations available to date.