Quark Nugget Dark Matter: Comparison with radio observations of nearby galaxies

TL;DR

This paper evaluates quark nugget dark matter as a source of galactic microwave and radio emissions, finding it consistent with observations and less constrained than WIMP models, across a wide parameter space.

Contribution

It introduces a quark nugget dark matter model and shows it remains viable given current radio and microwave observations, unlike traditional WIMP models.

Findings

Quark nugget dark matter is not strongly constrained by radio observations.

The model remains viable over a broad parameter space.

Contrasts with constraints on WIMP dark matter models.

Abstract

It has been recently claimed that radio observations of nearby spiral galaxies essentially rule out a dark matter source for the galactic haze. Here we consider the low energy thermal emission from a quark nugget dark matter model in the context of microwave emission from the galactic centre and radio observations of nearby Milky Way like galaxies. We demonstrate that observed emission levels do not strongly constrain this specific dark matter candidate across a broad range of the allowed parameter space in drastic contrast with conventional dark matter models based on the WIMP paradigm.