Isotropic Radio Background from Quark Nugget Dark Matter

TL;DR

This paper proposes that the isotropic radio background excess observed by ARCADE2 can be explained by interactions of quark nugget dark matter, linking it to other diffuse emission excesses in the universe.

Contribution

It introduces a unified dark matter model involving quark nuggets that accounts for multiple diffuse emission excesses without new parameters.

Findings

Explains ARCADE2 radio excess with quark nugget dark matter.

Links radio excess to WMAP Haze, X-ray, and gamma-ray emissions.

Uses the same model parameters for multiple astrophysical phenomena.

Abstract

Recent measurements by the ARCADE2 experiment unambiguously show an excess in the isotropic radio background at frequencies below the GHz scale. We argue that this excess may be a natural consequence of the interaction of visible and dark matter in the early universe if the dark matter consists of heavy nuggets of quark matter. Explanation of the observed radio band excess requires the introduction of no new parameters, rather we exploit the same dark matter model and identical normalization parameters to those previously used to explain other excesses of diffuse emission from the centre of our galaxy. These previously observed excesses include the WMAP Haze of GHz radiation, keV X -ray emission and MeV gamma-ray radiation.