来自轴子的太阳X射线：依赖于静止质量的特征
Solar X-rays from Axions: Rest-Mass Dependent Signatures
摘要：
太阳X射线的光谱形状是幂律的。太阳越活跃，分布就越不陡峭。这种现象可以用在光球层400公里深处发生的X射线的轴子再生来解释。它们的下康普顿化再现了测量的光谱形状，指向静止质量为m_a~17 meV/c2的轴子，而不与天体物理实验室的限制相矛盾。在2009年（SphinX任务）期间，直接测量了来自极端安静的太阳的软X射线光谱，尽管迄今为止一直被忽视，但符合轴子的情况。
英文摘要：
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.
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