Journal
PHYSICAL REVIEW D
Volume 102, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.102.123024
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Funding
- Italian Istituto Nazionale di Fisica Nucleare (INFN) through the Theoretical Astroparticle Physics project
- NATNET: Neutrino and Astroparticle Theory Network under the program PRIN 2017 - Italian Ministero dell'Universit`a e della Ricerca (MUR) [2017W4HA7S]
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The Sun is a well-studied astrophysical source of axionlike 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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