Production of axion-like particles from photon conversions in large-scale solar magnetic fields. (arXiv:2010.06601v2 [hep-ph] UPDATED)
<a href="http://arxiv.org/find/hep-ph/1/au:+Guarini_E/0/1/0/all/0/1">Ersilia Guarini</a> (Bari Univ.), <a href="http://arxiv.org/find/hep-ph/1/au:+Carenza_P/0/1/0/all/0/1">Pierluca Carenza</a> (Bari Univ. &amp; INFN Bari), <a href="http://arxiv.org/find/hep-ph/1/au:+Galan_J/0/1/0/all/0/1">Javier Galan</a> (Zaragoza Univ.), <a href="http://arxiv.org/find/hep-ph/1/au:+Giannotti_M/0/1/0/all/0/1">Maurizio Giannotti</a> (Barry Univ.), <a href="http://arxiv.org/find/hep-ph/1/au:+Mirizzi_A/0/1/0/all/0/1">Alessandro Mirizzi</a> (Bari Univ. &amp; INFN Bari)

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.

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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