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S. Vagnozzi

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Preprint Sep 2026

Stress-testing the spatially flat Universe: nonparametric spatial curvature determination from DESI DR2

We present a nonparametric determination of spatial curvature using only late-time geometrical probes. Under a Gaussian Process smoothness prior, we jointly constrain the dimensionless expansion history and $\Omega_K$, combining three Type Ia Supernovae (SNeIa) samples with either DESI DR2 line-of-sight baryon acoustic...

Hannah C. Turner, S. Dhawan, S. Vagnozzi et al. · 0 citations

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