# Mirror magnetic field and its impact on dark matter distribution in galaxies

## TL;DR

This paper investigates the evolution of mirror magnetic fields across cosmological epochs and explores their potential influence on mirror matter distribution within galaxies, considering dynamo amplification and kinetic mixing effects.

## Contribution

It provides a detailed estimation of mirror magnetic field values during different cosmological stages and discusses their impact on galaxy structure, introducing a generalized model with kinetic mixing.

## Key findings

- Mirror magnetic fields are generated during radiation era and post-recombination.
- Dynamo amplification can enhance galactic mirror magnetic fields.
- Mirror magnetic fields may affect the distribution of mirror matter in galaxies.

## Abstract

We obtain the value of the mirror magnetic field during different stages of cosmological evolution. We consider the magnetic field generation in the radiation-dominated era and the post-recombination epoch. We also estimate its galactic low-scale value in the process of dynamo amplification. We discuss a possible effect of the mirror magnetic field on the mirror matter distribution in a galaxy. The model can be generalized by assuming the existence of kinetic mixing between ordinary and mirror particles.