Astrophysics

    

Galactic Rotation Curves as Probes of Cosmic Expansion: A Metric Inflow Model Applied to UGC 1281

Authors: E.P.J. de Haas

We present a fit of the rotation curve of galaxy UGC 1281 using a model based on metric inflow velocities, without invoking dark matter. The model relies on a minimal set of physical parameters: bulge radius (R), baryonic bulge mass (M), and the cosmological Hubble parameter (H(z)). We evaluate the performance of the model using two fixed values for (H(z)) based on the Planck and SH0ES determinations of (H_0). The ability of the model to differentiate between these cosmological values is discussed.

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[v1] 2025-07-14 01:19:22

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