Dani Postma

Bang-Time Perturbations and Redshift Drift in LTB Cosmology: Regularity, Distance Compensation, and Light-Cone Response

We study how radial variations in the bang time affect redshift drift in Lemaître–Tolman–Bondi cosmologies. Starting from the neighboring-light-cone equations, we derive a linear response system and evaluate it for regular dust and Λ-bearing model families. In the sampled parabol...