Dark Matter-Induced Baryonic Feedback in Galaxies

TL;DR

This paper explores how interactions between dark matter and baryonic matter can influence galaxy structures, showing that dark matter accumulation in white dwarfs can trigger supernovae that significantly modify star formation and halo profiles.

Contribution

It introduces a novel dark matter-induced baryonic feedback mechanism affecting galaxy evolution, distinct from traditional supernova feedback models.

Findings

Dark matter can collect inside white dwarfs and ignite supernovae.

Dark matter-induced feedback can alter star formation rates.

Halo density profiles are significantly affected by this process.

Abstract

We demonstrate that non-gravitational interactions between dark matter and baryonic matter can affect structural properties of galaxies. Detailed galaxy simulations and analytic estimates demonstrate that dark matter which collects inside white dwarf stars and ignites Type Ia supernovae can substantially alter star formation, stellar feedback, and the halo density profile through a dark matter-induced baryonic feedback process, distinct from usual supernova feedback in galaxies.