Cosmic Voids in Sloan Digital Sky Survey Data Release 7

@article{Pan2011CosmicVI,
  title={Cosmic Voids in Sloan Digital Sky Survey Data Release 7},
  author={Danny Pan and Michael S. E. Vogeley and Fiona Hoyle and Yun-Young Choi and Changbom Park},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2011},
  volume={421},
  pages={926-934}
}
We study the distribution of cosmic voids and void galaxies using Sloan Digital Sky Survey Data Release 7 (SDSS DR7). Using the VoidFinder algorithm as described by Hoyle & Vogeley (2002), we identify 1054 statistically significant voids in the northern galactic hemisphere with radii > 10h 1 Mpc. The filling factor of voids in the sample volume is 62%. The largest void is just over 30h 1 Mpc in effective radius. The median effective radius is 17h 1 Mpc. The voids are found to be significantly… 

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