Local properties of WMAP Cold Spot
  We investigate the local properties of WMAP Cold Spot (CS) by defining the
local statistics: mean temperature, variance, skewness and kurtosis. We find
that, compared with the \emph{coldest spots} in random Gaussian simulations,
WMAP CS deviates from Gaussianity at $\sim 99%$ significant level. In the
meanwhile, when compared with the spots at the same position in the simulated
maps, the values of local variance and skewness around CS are all
systematically larger in the scale of $R>5^{\circ}$, which implies that WMAP CS
is a large-scale non-Gaussian structure, rather than a combination of some
small structures. This is consistent with the finding that the non-Gaussianity
of CS is totally encoded in the WMAP low multipoles. Furthermore, we find that
the cosmic texture can excellently explain all the anomalies in these
statistics.
