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A dataset of 126,501 spiral galaxies taken from Sloan Digital Sky Survey wasused to analyze the large-scale galaxy handedness in different regions of thelocal universe. The analysis was automated by using a transformation of thegalaxy images to their radial intensity plots, which allows automatic analysisof the galaxy spin and can therefore be used to analyze a large galaxy dataset.The results show that the local universe (z<0.3) is not isotropic in terms ofgalaxy spin, with probability P<5.8*10^-6 of such asymmetry to occur by chance.The handedness asymmetries exhibit an approximate cosine dependence, and themost likely dipole axis was found at RA=132, DEC=32 with 1 sigma error range of107 to 179 degrees for the RA. The probability of such axis to occur by chanceis P<1.95*10^-5 . The amplitude of the handedness asymmetry reported in thispaper is generally in agreement with Longo, but the statistical significance isimproved by a factor of 40, and the direction of the axis disagrees somewhat.

Handedness asymmetry of spiral galaxies with z<0.3 shows cosmic parity violation and a dipole axis