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Guidelines for axion identification in astrophysical observations

K. Zioutas·Y. Semertzidis·Th. Papaevangelou
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Abstract

The origin of various celestial phenomena have remained mysterious for conventional astrophysics. Therefore, alternative solutions should be considered, taking into account the involvement of unstable dark-matter particle candidates, such as the celebrated axions or other as yet unforeseen axion-like particles. Their spontaneous and induced decay by the ubiquitous solar magnetic fields can be at the origin of persisting enigmatic X-ray emission, giving rise to a steady and a transient/local solar activity, respectively. The (coherent) conversion of photons into axion(-like) particles in intrinsic magnetic fields may modify the solar axion spectrum. The reversed process can be behind transient (solar) luminosity deficits in the visible. Then, the Sun might be also a strong source of ~eV-axions. Thus, enigmatic observations might be the as yet missing direct signature for axion(-like) particles in earth-bound detectors.

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K. Zioutas, Y. Semertzidis, Th. Papaevangelou. 2005-12-21. Guidelines for axion identification in astrophysical observations. https://arxiv.org/abs/astro-ph/0512114

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