Trouble beyond <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>H</mml:mi><mml:mn>0</mml:mn></mml:msub></mml:math> and the new cosmic triangles

Abstract

The authors introduce a new actor in the current drama of the Hubble tension (conflicting measurements of ${H}_{0}$), namely the age of the Universe ${t}_{\text{U}}$, as determined by the oldest globular clusters, and show that if local measurements are correct, the resolution of the Hubble tension implies a modification of the cosmological standard model $\mathrm{\ensuremath{\Lambda}}$CDM in the early and late Universe. Once systematic uncertainties are reduced, measuring ${t}_{\text{U}}$ will discriminate between the viable solutions for the ${H}_{0}$ tension, i.e. changing $\mathrm{\ensuremath{\Lambda}}$CDM or errors in the local measurements.

Topics & Concepts