3 papers
astro-ph.CO2026
Accelerating expansion and isotropic sky-hemisphere consistency in Pantheon+ supernovae: a revised analysis in the dark energy debate
Saibal Ray, Maxim Khlopov, Aritra Sanyal +2
We perform four independent decompositions of the deceleration parameter using 1564 Type Ia supernovae (SNe Ia) from the Pantheon+ catalogue: by redshift bin, sky hemisphere,…
gr-qc2026
Observationally Constrained Cosmological model in Gravity with parameterization
Vinod Kumar Bhardwaj, Maxim Khlopov, Maxim Krasnov +1
In the present work, we explore an observationally constrained cosmological model in the framework of gravity, where denotes the non-metricity scalar and…
gr-qc2025
Transitioning late-time cosmology with the Hubble parameterization
Vinod Kumar Bhardwaj, Saibal Ray, Kazuharu Bamba +1
We investigate a late-time cosmological model for a homogeneous and isotropic space-time in the Rastall theory. We explore the observational constraints on the Hubble parameter by…