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We confront Yukawa modified cosmology, proposed in arXiv:2304.11492 [Jusufiet al. arXiv:2304.11492], with data from Supernovae Type Ia (SNe Ia) and Hubbleparameter (OHD) observations. Yukawa cosmology is obtained from a Yukawa-likegravitational potential, with coupling parameter $\alpha$ and wavelengthparameter $\lambda$, which gives rise to modified Friedmann equations. We showthat the agreement with observations is very efficient, and within $1\sigma$confidence level we find the best-fit parameters$\lambda=\left(2693_{-1262}^{+1191}\right)\, \rm Mpc$,$\alpha=0.416_{-0.326}^{+1.137}$, and a graviton mass of$m_{g}=\left(2.374_{-0.728}^{+2.095}\right)\times 10^{-42}\, \text{GeV}$.Additionally, we establish a connection between the effective dark matter anddark energy density parameters and the angular radius of the black hole shadowof the SgrA and M87 black holes in the low-redshift limit, consistent with theEvent Horizon Telescope findings.

Observational constraints on Yukawa cosmology and connection with black hole shadows