Role of Spatial Curvature in a Dark Energy Interacting Model

This paper investigates the effects of spatial curvature in a model where dark matter and dark energy interact. The analysis employs a range of datasets, including CMB, BAO, Type Ia Supernova, $H(z)$ from cosmic chronometers, H₀ measurements from Megamasers and SH0ES, growth rate data and strong lensing time delay measurements, to assess the model's fit and explore the late-time dynamics of the interacting dark sector in a non-flat cosmological framework. The study indicates that introducing curvature can significantly impact the Hubble constant (H₀) and the structure growth parameter (S₈), potentially easing tensions between early and late universe observations. The observational data shows an indication for a closed universe. This implies that the presence of curvature and its influence cannot be neglected entirely.