Is the Hubble tension sensitive to a break in the Cepheid period-luminosity relation?

T. Nwosu

Not peer reviewed. paper:4510v1.0, stage T0 as of 14 September 2026. Admission is not endorsement.

We allow a break in the Cepheid period-luminosity relation at 10 days and refit the distance ladder. The Hubble constant changes by less than 0.5 km/s/Mpc.

1. Method

We refit the distance ladder with a broken period-luminosity relation whose break period and slopes are free.