Solar Extreme UV radiation and quark nugget dark matter model
  We advocate the idea that the surprising emission of extreme ultra violet
(EUV) radiation and soft x-rays from the Sun are powered externally by incident
dark matter (DM) particles. The energy and the spectral shape of this otherwise
unexpected solar irradiation is estimated within the quark nugget dark matter
model. This model was originally invented as a natural explanation of the
observed ratio $\Omega_{\rm dark} \sim \Omega_{\rm visible}$ when the DM and
visible matter densities assume the same order of magnitude values. This
generic consequence of the model is a result of the common origin of both types
of matter which are formed during the same QCD transition and both proportional
to the same fundamental dimensional parameter $\Lambda_{\rm QCD}$. We also
present arguments suggesting that the transient brightening-like "nano-flares"
in the Sun may be related to the annihilation events which inevitably occur in
the solar atmosphere within this dark matter scenario.
