Abstract

We confront Yukawa modified cosmology, proposed in Jusufi et al. [arXiv:2304.11492], with data from Supernovae Type Ia (SNe Ia) and Hubble parameter (OHD) observations. Yukawa cosmology is obtained from a Yukawa-like gravitational potential, with coupling parameter ? and wavelength parameter ?, which gives rise to modified Friedmann equations. We show that the agreement with observations is very efficient, and within 1? confidence level we find the best-fit parameters ?=2693?1262+1191Mpc, ?=0.416?0.326+1.137, and a graviton mass of mg=2.374?0.728+2.095×10?42GeV. Additionally, we establish a connection between the effective dark matter and dark energy density parameters and the angular radius of the black hole shadow of the SgrA and M87 black holes in the low-redshift limit, consistent with the Event Horizon Telescope findings. © 2023 The Author(s)