The Metric of the Cosmos from Luminosity and Age Data

Understand

This paper presents the algorithm for determining the Lemaitre-Tolman (LT) model that best fits given datasets for maximum stellar ages, and SNIa luminosities, both as functions of redshift.

• It then applies it to current cosmological data.
• Special attention must be given to the handling of the origin, and the region of the maximum diameter distances.
• As with a previous combination of datasets (galaxy number counts and luminosity distances versus redshift), there are relationships that must hold at the region of the maximum diameter distance, which are unlikely to be obeyed exactly by real data.