WMAP Haze: Directly Observing Dark Matter?

TL;DR

This paper proposes that dark matter composed of dense matter/antimatter nuggets can explain the WMAP haze and other diffuse galactic emissions, linking dark matter properties to observable microwave signals.

Contribution

It introduces a unified model of dark matter that accounts for multiple diffuse radiation bands and matches observational data, providing a novel explanation for the WMAP haze.

Findings

Model matches x-ray observations in keV band

Predicted microwave emission aligns with WMAP haze

Supports dark matter as matter/antimatter nuggets

Abstract

In this paper we show that dark matter in the form of dense matter/antimatter nuggets could provide a natural and unified explanation for several distinct bands of diffuse radiation from the core of the Galaxy spanning over 12 orders of magnitude in frequency. We fix all of the phenomenological properties of this model by matching to x-ray observations in the keV band, and then calculate the unambiguously predicted thermal emission in the microwave band, at frequencies smaller by 10 orders of magnitude. Remarkably, the intensity and spectrum of the emitted thermal radiation are consistent with--and could entirely explain--the so-called "WMAP haze": a diffuse microwave excess observed from the core of our Galaxy by the Wilkinson Microwave Anisotropy Probe (WMAP). This provides another strong constraint of our proposal, and a remarkable nontrivial validation. If correct, our proposal identifies the nature of the dark matter, explains baryogenesis, and provides a means to directly probe the matter distribution in our Galaxy by analyzing several different types of diffuse emissions.