Detection of a Dipole in the Handedness of Spiral Galaxies with
  Redshifts z ~ 0.04
  A preference for spiral galaxies in one sector of the sky to be left-handed
or right-handed spirals would indicate a parity violating asymmetry in the
overall universe and a preferred axis. This study uses 15158 spiral galaxies
with redshifts <0.085 from the Sloan Digital Sky Survey. An unbinned analysis
for a dipole component that made no prior assumptions for the dipole axis gives
a dipole asymmetry of -0.0408\pm0.011 with a probability of occurring by chance
of 7.9 x 10-4. A similar asymmetry is seen in the Southern Galaxy spin catalog
of Iye and Sugai. The axis of the dipole asymmetry lies at approx. (l, b)
=(52{\deg}, 68.5{\deg}), roughly along that of our Galaxy and close to
alignments observed in the WMAP cosmic microwave background distributions. The
observed spin correlation extends out to separations ~210 Mpc/h, while spirals
with separations < 20 Mpc/h have smaller spin correlations.
