Spin Parity of Spiral Galaxies III -- Dipole Analysis of the Distribution of SDSS Spirals with 3D Random Walk Simulations
Masanori Iye,
Masafumi Yagi,
Hideya Fukumoto
Abstract:Observation has not yet determined whether the distribution of spin vectors of galaxies is truly random. It is unclear whether is there any large-scale symmetry-breaking in the distribution of the vorticity field in the universe. Here, we present a formulation to evaluate the dipole component D max of the observed spin distribution, whose statistical significance σ D can be calibrated by the expected amplitude for 3D random walk (random flight) simulations.We apply this formulation to evaluate the dipole compo… Show more
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