Light bosons and photospheric solutions to the solar abundance problem
Abstract
It is well known that current spectroscopic determinations of the chemical composition of the Sun are starkly at odds with the metallicity implied by helioseismology. We investigate whether the discrepancy may be due to conversion of photons to a new light boson in the solar photosphere. We examine the impact of particles with axion-like interactions with the photon on the inferred photospheric abundances, showing that resonant axion-photon conversion is not possible in the region of the solar atmosphere in which line-formation occurs. Although non-resonant conversion in the line-forming regions can in principle impact derived abundances, constraints from axion-photon conversion experiments rule out the couplings necessary for these effects to be detectable. We show that this extends to hidden photons and chameleons (which would exhibit similar phenomenological behaviour), ruling out known theories of new light bosons as photospheric solutions to the solar abundance problem.
Cite
@article{arxiv.1206.4315,
title = {Light bosons and photospheric solutions to the solar abundance problem},
author = {Aaron C. Vincent and Pat Scott and Regner Trampedach},
journal= {arXiv preprint arXiv:1206.4315},
year = {2013}
}
Comments
11 pages, PDFLaTeX. v2: Major revision. Inclusion of refractive index effect on photon-ALP conversion strengthens our conclusion that such an effect cannot explain the solar abundance problem with a coupling allowed by experimental axion-like particle searches. We now include a discussion of chameleons and hidden photons, with similar conclusions