Reconstructing the Universe: Testing the Mutual Consistency of the Pantheon and SDSS/eBOSS BAO Data Sets with Gaussian Processes

We test the mutual consistency between baryon acoustic oscillation measurements from eBOSS SDSS final release, as well Pantheon supernova compilation in a model independent fashion using Gaussian process regression. also their joint with $\Lambda$CDM model, fashion. use regression to reconstruct expansion history that is preferred by these two datasets. While this methodology finds no significant preference for flexibility beyond $\Lambda$CDM, we are able generate number of reconstructed histories fit data better than best-fit model. These example may point way towards modifications $\Lambda$CDM. constrain parameters $\Omega_k$ and $H_0r_d$ both find $H_0r_d =10030 \pm 130$ km/s $\Omega_k = 0.05 0.10$ 10040 140$ 0.02 0.20$ case.