The Λ CDM model provides a good fit to most astronomical observations but harbors large
areas of phenomenology and ignorance. With the improvements in the precision and …

The Hubble tension has now grown to a level of significance which can no longer be
ignored and calls for a solution which, despite a huge number of attempts, has so far eluded …

We present an estimate of the bulk flow in a volume of radii 150− 200 h− 1 Mpc using the
minimum variance method with data from the CosmicFlows-4 (CF4) catalogue. The addition …

The concept of torsion in geometry, although known for a long time, has not gained
considerable attention from the physics community until relatively recently, due to its diverse …

We use the state-of-the-art data on cosmic chronometers (CCH) and the Pantheon+
compilation of supernovae of Type Ia (SNIa) to test the constancy of the SNIa absolute …

ABSTRACT The Cosmological Principle, that the Universe is homogeneous and isotropic on
sufficiently large scales, underpins the standard model of cosmology. However, a recent …

We use the ages of old astrophysical objects (OAO) in the redshift range 0≲ z≲ 8 as
stringent tests of the late-time cosmic expansion history. Since the age of the Universe at any …

The cosmological principle is fundamental to the standard cosmological model. It assumes
that the Universe is homogeneous and isotropic on very large scales. As the basic …

Galaxies in the early Universe appear to have grown too big too fast, assembling into
massive, monolithic objects more rapidly than anticipated in the hierarchical Lambda cold …

We present a Bayesian analysis of the Quaia sample of 1.3 million quasars as a test of the
cosmological principle. This principle postulates that the Universe is homogeneous and …