An analytical late-Universe approach to the weaving of modern cosmology

Understand

Combining cosmological probes has consolidated the standard cosmological model with percent precision, but some tensions have recently emerged when certain parameters are estimated from the local or primordial Universe.

• The origin of this behaviour is still under debate, however, it is crucial to study as many probes as possible to cross-check the results with independent methods and provide additional pieces of information to the cosmological puzzle.
• In this work, by combining several late-Universe probes (0$<z<$10), namely, Type Ia SuperNovae, Baryon Acoustic Oscillations, Cosmic Chronometers and Gamma-Ray Bursts, we aim to derive cosmological constraints independently of local or early-Universe anchors.
• To test the standard cosmological model and its various extensions, considering an evolving Dark Energy Equation of State and the curvature as a free parameter, we analyse each probe individually and all their possible permutations.