Solar chameleons

Journal Article · Sun Aug 15 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.043007· OSTI ID:21420905

Brax, Philippe ^[1]; Zioutas, Konstantin ^[2]

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1. Institut de Physique Theorique, CEA, IPhT, CNRS, URA 2306, F-91191Gif/Yvette Cedex (France)
2. University of Patras, GR 26504 PATRAS (Greece)

We analyze the creation of chameleons deep inside the Sun (R{approx}0.7R{sub sun}) and their subsequent conversion to photons near the magnetized surface of the Sun. We find that the spectrum of the regenerated photons lies in the soft x-ray region, hence addressing the solar corona problem. Moreover, these back-converted photons originating from chameleons have an intrinsic difference with regenerated photons from axions: their relative polarizations are mutually orthogonal before Compton interacting with the surrounding plasma. Depending on the photon-chameleon coupling and working in the strong coupling regime of the chameleons to matter, we find that the induced photon flux, when regenerated resonantly with the surrounding plasma, coincides with the solar flux within the soft x-ray energy range. Moreover, using the soft x-ray solar flux as a prior, we find that with a strong enough photon-chameleon coupling, the chameleons emitted by the Sun could lead to a regenerated photon flux in the CAST magnetic pipes, which could be within the reach of CAST with upgraded detector performance. Then, axion helioscopes have thus the potential to detect and identify particle candidates for the ubiquitous dark energy in the Universe.

• OSTI ID: 21420905
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 4; Other Information: DOI: 10.1103/PhysRevD.82.043007; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
AXIONS
ENERGY RANGE
NONLUMINOUS MATTER
PARTICLES
PHOTONS
PLASMA
POLARIZATION
SOFT X RADIATION
SOLAR CORONA
SOLAR FLUX
SPECTRA
STRONG-COUPLING MODEL
SUN
SURFACES
UNIVERSE
ATMOSPHERES
BOSONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
GOLDSTONE BOSONS
IONIZING RADIATIONS
MAIN SEQUENCE STARS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
PARTICLE MODELS
POSTULATED PARTICLES
RADIATION FLUX
RADIATIONS
SOLAR ATMOSPHERE
STARS
STELLAR ATMOSPHERES
STELLAR CORONAE
X RADIATION