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Probing dark energy with redshift drift
S. Pandolfi, M. Martinelli
327 - 333
10.3254/978-1-61499-476-3-327
Proceedings of the International School of Physics "Enrico Fermi"
Volume 186: New Horizons for Observational Cosmology
Abstract

Future redshift-drift measurements will be crucial to probe the so-called “redshift desert”, thus providing a new tool for cosmological studies. In this paper we quantify the ability of a future measurement of the redshift-drift signal by a CODEX-like spectrograph to constrain a phenomenological parametrization of dynamical dark energy, specifically by obtaining constraints on w0 and wa. We also demonstrate that if used alongside CMB data, the redshift-drift measurements will be able to break degeneracies between expansion parameters, thus greatly improving cosmological constraints.

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