Solar X-rays from Axions: Rest-Mass Dependent Signatures
Solar and Stellar Astrophysics
2010-03-11 v1
Abstract
The spectral shape of solar X-rays is a power law. The more active the Sun is, the less steep the distribution. This behaviour can be explained by axion regeneration to X-rays occurring ~400km deep into the photosphere. Their down-comptonization reproduces the measured spectral shape, pointing at axions with rest mass m_a~17 meV/c2, without contradicting astrophysical-laboratory limits. Directly measured soft X-ray spectra from the extremely quiet Sun during 2009 (SphinX mission), though hitherto overlooked, fitt the axion scenario.
Keywords
Cite
@article{arxiv.1003.2181,
title = {Solar X-rays from Axions: Rest-Mass Dependent Signatures},
author = {Konstantin Zioutas and Mary Tsagri and Yannis Semertzidis and Thomas Papaevangelou and Antonios Gardikiotis and Theopisti Dafni and Vassilis Anastassopoulos},
journal= {arXiv preprint arXiv:1003.2181},
year = {2010}
}
Comments
To appear in Proceedings of the 5th Patras Axion Workshop, Durham 2009