Axion mechanism of the Sun luminosity and solar dynamo - geodynamo connection

TL;DR

This paper proposes a novel axion-based mechanism linking solar magnetic activity to Earth's magnetic field, suggesting axions influence solar luminosity and Earth's geodynamo through magnetic field interactions and resonance absorption.

Contribution

It introduces a new axion mechanism connecting solar and terrestrial magnetic phenomena, with estimated axion parameters based on observed correlations.

Findings

Strong negative correlation between solar tachocline magnetic field and Earth magnetic field.

Estimated axion coupling constants and mass consistent with observed magnetic variations.

Proposed axion mechanism explains solar luminosity modulation and Earth's magnetic field dynamics.

Abstract

We show existence of strong negative correlation between the temporal variations of magnetic field toroidal component of the solar tachocline (the bottom of convective zone) and the Earth magnetic field (Y-component). The possibility that hypothetical solar axions, which can transform into photons in external electric or magnetic fields (the inverse Primakoff effect), can be the instrument by which the magnetic field of convective zone of the Sun modulates the magnetic field of the Earth is considered. We propose the axion mechanism of Sun luminosity and "solar dynamo - geodynamo" connection, where an energy of solar axions emitted in M1 transition in 57Fe nuclei is modulated at first by the magnetic field of the solar tachocline zone (due to the inverse coherent Primakoff effect) and after that is resonance absorbed in the core of the Earth, thereby playing the role of an energy source and a modulator of the Earth magnetic field. Within the framework of this mechanism estimations of the strength of an axion coupling to a photon (ga_gamma about 1.64*10^-9 GeV^-1), the axion-nucleon coupling (ga_gamma_eff about 10^-5) and the axion mass (ma about 30 eV) have been obtained.