Search for streaming dark matter axions or other exotica

TL;DR

This paper proposes a novel method to detect streaming dark matter axions by leveraging gravitational lensing effects and a network of detectors for enhanced discovery potential.

Contribution

It introduces a new approach using gravitational lensing and detector networks to improve the search for galactic axions and similar exotica.

Findings

Flux enhancement via gravitational lensing can improve detection chances.

A network of detectors offers full time coverage and broad axion mass acceptance.

The method could benefit other dark matter search strategies.

Abstract

We suggest a new approach to search for galactic axions or other similar exotica. Streaming dark matter (DM) could have a better discovery potential because of flux enhancement, due to gravitational lensing when the Sun and/or a planet are aligned with a DM stream. Of interest are also axion miniclusters, in particular, if the solar system has trapped one during its formation. Wide-band axion antennae fit this concept, but also the proposed fast narrow band scanning. A network of detectors can provide full time coverage and a large axion mass acceptance. Other DM searches may profit from this proposal.