  We present bounds on mirror dark matter scenario derived by using the effect
of mirror matter on the luminosity of the Sun. In the perturbative regime where
the mirror matter concentration is small relative to the ordinary matter we
estimate the heat transfer from ordinary matter to the mirror sector by simple
analytic consideration. That amount of heat transfer is radiated via mirror
photons and increases the required energy production in order to maintain the
observed luminosity. We then present more detailed numerical calculations of
the total amount of this energy transfer.
