@inproceedings{94be623c76db42dfbf3df13bb0244445,
title = "Measuring redshift-space distortion with future SKA surveys",
abstract = "The peculiar motion of galaxies can be a particularly sensitive probe of gravitational collapse. As such, it can be used to measure the dynamics of dark matter and dark energy as well the nature of the gravitational laws at play on cosmological scales. Peculiar motions manifest themselves as an overall anisotropy in the measured clustering signal as a function of the angle to the line-of-sight, known as redshift-space distortion (RSD). Limiting factors in this measurement include our ability to model non-linear galaxy motions on small scales and the complexities of galaxy bias. The anisotropy in the measured clustering pattern in redshift-space is also driven by the unknown distance factors at the redshift in question, the Alcock-Paczynski distortion. This weakens growth rate measurements, but permits an extra geometric probe of the Hubble expansion rate. In this short chapter we will briefly describe the scientific background to the RSD technique, and forecast the potential of the SKA phase 1 and the SKA2 to measure the growth rate using both galaxy catalogues and intensity mapping, assessing their competitiveness with current and future optical galaxy surveys.",
author = "Alvise Raccanelli and Philip Bull and Stefano Camera and David Bacon and Chris Blake and Olivier Dore and Ferreira, {Pedro G.} and Roy Maartens and Santos, {M{\'a}rio G.} and Matteo Viel and Gong-Bo Zhao",
year = "2015",
month = apr,
language = "English",
publisher = "Proceedings of Science",
booktitle = "Advancing Astrophysics with the Square Kilometre Array",
note = "Advancing Astrophysics with the Square Kilometre Array ; Conference date: 09-06-2014 Through 13-06-2014",
}