# Axion Quark Nugget Dark Matter: Time Modulations and Amplifications

## TL;DR

This paper investigates axion production from Axion Quark Nugget (AQN) dark matter, focusing on unique short-term signal enhancements and their potential detection through time modulation and amplification effects.

## Contribution

It introduces a novel short-term amplification mechanism for axion signals in the AQN model and evaluates its implications for detection strategies.

## Key findings

- AQN model predicts short-term burst-like axion signal amplifications up to 10^2-10^3 times.
- Annual and daily modulations are confirmed as key signatures for axion detection.
- The study identifies a specific mass window for relativistic axions relevant to the AQN model.

## Abstract

We study the new mechanism of the axion production suggested recently in [1,2]. This mechanism is based on the so-called Axion Quark Nugget (AQN) dark matter model, which was originally invented to explain the similarity of the dark and visible cosmological matter densities. We perform numerical simulations to evaluate the axion flux on the Earth's surface. We examine annual and daily modulations, which have been studied previously and are known to occur for any type of dark matter. We also discuss a novel type of short time enhancements which are unique to the AQN model: the statistical fluctuations and burst-like amplification, both of which can drastically amplify the axion signal, up to a factor $\sim10^2-10^3$ for a very short period of time. The present work studies the AQN-induced axions within the mass window $10^{-6}{\rm\,eV}\lesssim m_a\lesssim10^{-3}\rm\,eV$ with typical velocities $\langle v_a\rangle\sim0.6c$. We also comment on the broadband detection strategy to search for such relativistic axions by studying the daily and annual time modulations as well as random burst-like amplifications.