Author:
Hoof Sebastian,Jaeckel Joerg,Thormaehlen Lennert J.
Abstract
Abstract
Axions, if discovered, could serve as a powerful new messenger for studying astrophysical
objects. In this study we show how the Sun's spatial and spectral “axion image” can be inverted
to infer the radial dependence of solar properties in a model-independent way. In particular, the
future helioscope IAXO may allow us to accurately reconstruct the Sun's temperature profile T(r)
in the region up to about 80% (40%) of the solar radius for an axion-photon coupling
g
aγγ of 6 × 10-11 GeV-1 (10-11 GeV-1). The statistical fluctuations
in the photon data lead to a median precision of better than 10% (16%) in this region, and the
corresponding median accuracy was better than 4% (7%). While our approach can simultaneously
infer the radial profile of the Debye scale κ
s(r), its weaker connection to the
axion production rate leads to median accuracy and precision of worse than 30% and 50%,
respectively. We discuss possible challenges and improvements for realistic setups, as well as
extensions to more general axion models. We also highlight advantages of helioscopes over
neutrino detectors.
Subject
Astronomy and Astrophysics
Cited by
1 articles.
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1. Spectra of axions emitted from main sequence stars;Journal of Cosmology and Astroparticle Physics;2023-11-01