Guidelines for axion identification in astrophysical observations

Details Guidelines for axion identification in astrophysical observations Guidelines for axion identification in astrophysical observations

2005-12-05

arxiv.org/abs/astro-ph/0512114v2

Astronomy and Astrophysics

Astrophysics

6 pages, to be submitted to JCAP

Scientific paper

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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