CMB Hemispherical Asymmetry: Long Mode Modulation and non-Gaussianity
  The observed hemispherical asymmetry in CMB map can be explained by
modulation from a long wavelength super horizon mode which non-linearly couples
to the CMB modes. We address the criticism in [1] about the role of
non-Gaussianities in squeezed and equilateral configurations in generating
hemispherical asymmetry from the long mode modulation. We stress that the
modulation is sensitive to the non-Gaussianity in the squeezed limit. In
addition, we demonstrate the validity of our approach in providing a
consistency condition relating the amplitude of dipole asymmetry to f_{NL} in
the squeezed limit.
