Electron and Photon Energy Deposition in Universe

TL;DR

This paper provides detailed calculations of how high-energy electrons and photons deposit energy into the early universe's plasma, affecting heating, ionization, and excitation processes across different conditions.

Contribution

It offers new, detailed quantitative models of energy deposition fractions for high-energy particles in the early universe across various ionization states and redshifts.

Findings

Quantitative energy deposition fractions for electrons and photons.

Impact on heating, ionization, and excitation in early universe.

Models applicable across different ionization states and redshifts.

Abstract

We consider energy deposition of high energy electrons and photons in universe. We carry out detailed calculations of fractions of the initial energy of the injected electron or photon which are used to heat, ionize and excite background plasma in the early universe for various ionization states and redshifts.