Compton light pressure and spectral imprint of relic radiation on cosmic electrons

TL;DR

This paper develops a quantum electrodynamics-based model to study how cosmic microwave background radiation influences electron distributions over cosmic time, revealing a frozen non-equilibrium state and potential spectral signatures.

Contribution

It introduces an analytic QED/relativistic framework combining the Fokker-Planck equation with cosmological CMB temperature evolution, highlighting new spectral imprints on electrons.

Findings

Electrons exhibit a frozen non-equilibrium distribution due to CMB interactions.

Possible spectral lines and cutoffs are remnants of high-temperature sources.

The model predicts observable spectral imprints in the current epoch.

Abstract

A fully QED/relativistic theory of light pressure of CMB radiation and Fokker-Planck equation for electron distribution combined with cosmologic relation for CMB temperature, T, yields analytic results for the evolution of the distribution over large span of time and energies. A strong imprint of CMB on electrons transpires via formation of "frozen non-equilibrium" state of electrons in current epoch, and possible existence of cutoff and narrow spectral lines as remnants of high-T sources.