Axion Searches with Helioscopes and astrophysical signatures for axion(-like) particles

TL;DR

This paper reviews axion helioscopes, presents new simulation results on solar X-ray spectra, and discusses theoretical and observational advances in axion(-like) particle research, including potential interactions with magnetic fields.

Contribution

It provides a comprehensive review of helioscope capabilities and introduces new simulation data and theoretical ideas on axion interactions with magnetic field gradients.

Findings

Simulated solar X-ray spectra and isotropic emission profiles.

Estimated axion mass around 10 meV.

Proposed axion interaction with magnetic field gradients.

Abstract

The first part reviews the working mechanisms, capabilities and performance of axion helioscopes, including the achieved results so far. The 2nd part is observationally driven. New simulation results obtained with the Geant4 code reconstruct spectral shape of solar X-ray spectra, and their isotropic emission and lateral size. The derived rst mass of the axion(-like) particles is ~10meV. The axion interaction with magnetic field gradient is a generic theoretical suggestion that could reconcile present limits with relevant solar X-ray activity. A short outlook of the experimentally expanding solar axion field is given.