Forecasting Cosmological Constraints from Redshift Surveys

TL;DR

This paper develops a Fisher matrix formalism to forecast how well future redshift surveys can constrain cosmological parameters related to structure growth and gravity, aiding survey design.

Contribution

It introduces a formalism for predicting constraints from idealized redshift surveys, facilitating better survey planning and analysis.

Findings

Provides a Fisher matrix framework for cosmological forecasts.

Helps optimize future redshift survey designs.

Enhances understanding of structure growth constraints.

Abstract

Observations of redshift-space distortions in spectroscopic galaxy surveys offer an attractive method for observing the build-up of cosmological structure, which depends both on the expansion rate of the Universe and our theory of gravity. In this paper we present a formalism for forecasting the constraints on the growth of structure which would arise in an idealized survey. This Fisher matrix based formalism can be used to study the power and aid in the design of future surveys.