The Size and Shape of Local Voids

Abstract

We study the size and shape of low density regions in the local universe which we identify in the smoothed density field of the PSCz flux limited IRAS galaxy catalogue. After quantifying the systematic biases that enter in the detection of voids using our data set and method, we identify, using a smoothing length of 5 $h^{-1}$ Mpc, 14 voids within 80 $h^{-1}$ Mpc and using a smoothing length of 10 $h^{-1}$ Mpc, 8 voids within 130 $h^{-1}$ Mpc. We study the void size distribution and morphologies and find that there is roughly an equal number of prolate and oblate-like spheroidal voids. We compare the measured PSCz void shape and size distributions with those expected in six different CDM models and find that only the size distribution can discriminate between models. The models preferred by the PSCz data are those with intermediate values of ${\sigma }_8(\simeq 0.83)$, independent of cosmology.

final version, Accepted in MNRAS

References in corpus (4)

• The Void Phenomenon
• A Hubble Space Telescope Lensing Survey of X-ray Luminous Galaxy Clusters: II. A Search for Gravitationally Lensed EROs
• Comparing the SFI Peculiar Velocities with the PSCz Gravity Field: a VELMOD analysis
• Cosmological Implications of the PSCz PDF and its Moments

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