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astro-ph.CO2026
Near universality of nonlinear transverse and radial velocity responses in spherical collapse with arbitrary radial profiles
Valerio Marra
The nonlinear relation between density and expansion is usually formulated for a homogeneous spherical top hat, which has a single local Hubble rate. A smooth spherical profile ins…
astro-ph.CO2026
Tensions in Cosmology: Interpreting Them Through Inhomogeneous Models
Valerio Marra
We review a subset of the current tensions affecting the standard CDM cosmological model, emphasizing the role of chronic systematics and significance inflation in shaping their…