Multi-Parameter Transitions in Cosmological Calibrators: A Resolution to the Hubble Tension from SH0ES Data Analysis

Understand

The Hubble tension, characterized by discrepant measurements of the Hubble constant from early and late universe probes, remains one of the most significant challenges in cosmology.

• Building upon our previous analysis of individual parameter transitions in SH0ES data, we investigate the impact of simultaneous transitions in multiple Cepheid and SNIa calibration parameters at specific cosmic distances.
• We allow various combinations of transitions in Cepheid absolute magnitude ($M^W_H$), period-luminosity relation slope ($b_W$), metallicity coefficient ($Z_W$), and SNIa absolute magnitude ($M_B$).
• Our comprehensive analysis reveals a consistent preferred transition distance of approximately 23 Mpc across different parameter combinations.