Redshift-Space Distortions and f(z) from Group-Galaxy Correlations
Abstract
We investigate the accuracy achievable on measurements of the the growth rate of structure f(z) using redshift-space distortions (RSD), when (a) these are measured on the group-galaxy cross correlation function; (b) the latter is expanded over a modified version of the conventional spherical armonics, ``truncated multipole moments''. Simulation results give first indications that this combination can push systematic errors on f(z) below 3%, using scales r >= 10h -1 Mpc.
- Publication:
-
The Zeldovich Universe: Genesis and Growth of the Cosmic Web
- Pub Date:
- October 2016
- DOI:
- 10.1017/S1743921316010139
- Bibcode:
- 2016IAUS..308..342M
- Keywords:
-
- Large-scale structure;
- cosmological parameters;
- clustering