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GR: Fachverband Gravitation und Relativitätstheorie

GR 2: Cosmology I

GR 2.2: Vortrag

Montag, 20. März 2023, 16:50–17:10, ZEU/0255

Redshift Drift in Linear Perturbation Theory — Pedro Bessa, •Dennis Stock, and Ruth Durrer — Département de Physique Théorique, Université de Genève, Switzerland

The technical advance and continuously increasing precision of cosmological observations will make measurements of time variations of the redshift of a given source possible in the near future. This so-called redshift drift effect promises to be an exciting future cosmological probe of the Universe. In this talk, we derive its fully relativistic, gauge-invariant expression within linear perturbation theory and study in detail its angular power spectrum based on large scale structure observations.