Evidence for a Preferred Handedness of Spiral Galaxies

Details Evidence for a Preferred Handedness of Spiral Galaxies Evidence for a Preferred Handedness of Spiral Galaxies

2007-07-25

arxiv.org/abs/0707.3793v1

Astronomy and Astrophysics

Astrophysics

11 pages, 3 figures

Scientific paper

In this article I study the distribution of spiral galaxies in the Sloan Digital Sky Survey (SDSS) to investigate whether the universe has an overall handedness. A preference for spiral galaxies in one sector of the sky to be left-handed or right-handed spirals would indicate a preferred handedness. The SDSS data show a strong signal for such an asymmetry with a probability <0.2%. The asymmetry axis is at (RA,dec) ~(202 deg,25 deg) with an uncertainty ~15 deg. The axis appears to be correlated with that of the quadrupole and octopole moments in the WMAP microwave sky survey, an unlikely alignment that has been dubbed "the axis of evil". Our Galaxy is aligned with its spin axis along the same direction as the majority of the spirals.

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