3 papers
astro-ph.CO2026
Generalizing the CPL Parametrization through Dark Sector Interaction
Mikel Artola, Ruth Lazkoz, Vincenzo Salzano
We investigate a hierarchy of interacting dark energy (IDE) models featuring a non-gravitational coupling between dark matter and dark energy. Specifically, we examine scenarios wh…
astro-ph.CO2026
Updates on dipolar anisotropy in local measurements of the Hubble constant from Cosmicflows-4
Vincenzo Salzano, J. Beltrán Jiménez, Dario Bettoni +2
We investigate the angular anisotropy of the Hubble constant using the Cosmicflows-4 catalogue, with particular emphasis on three issues often treated only implicitly in the litera…
astro-ph.CO2026
Exploring Non-minimal coupling using ultra-diffuse galaxies
Saboura Zamani, Vincenzo Salzano, Dario Bettoni
We investigate whether a non-minimal coupling between dark matter and gravity can influence the internal dynamics of ultra-diffuse galaxies. Within this framework, the gravitationa…