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arXiv · 2010.06601

Production of axion-like particles from photon conversions in large-scale solar magnetic fields

Ersilia Guarini·Pierluca Carenza·Javier Galan·Maurizio Giannotti·Alessandro Mirizzi
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Abstract

The Sun is a well-studied astrophysical source of axion-like particles (ALPs), produced mainly through the Primakoff process. Moreover, in the Sun there exist large-scale magnetic fields that catalyze an additional ALP production via a coherent conversion of thermal photons. We study this contribution to the solar ALP emissivity, typically neglected in previous investigations. Furthermore, we discuss additional bounds on the ALP-photon coupling from energy-loss arguments, and the detection perspectives of this new ALP flux at future helioscope and dark matter experiments.

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Ersilia Guarini, Pierluca Carenza, Javier Galan, Maurizio Giannotti, Alessandro Mirizzi. 2020-10-13. Production of axion-like particles from photon conversions in large-scale solar magnetic fields. https://doi.org/10.1103/physrevd.102.123024

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