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The Evolutionary Map of the Universe (EMU) is an all-sky survey inradio-continuum which uses the Australian SKA Pathfinder (ASKAP). Using galaxyangular power spectrum and the integrated Sachs-Wolfe effect, we study thepotential of EMU to constrain models beyond $\Lambda$CDM (i.e., localprimordial non-Gaussianity, dynamical dark energy, spatial curvature anddeviations from general relativity), for different design sensitivities. Wealso include a multi-tracer analysis, distinguishing between star-forminggalaxies and galaxies with an active galactic nucleus, to further improve EMU'spotential. We find that EMU could measure the dark energy equation of stateparameters around 35\% more precisely than existing constraints, and that theconstraints on $f_{\rm NL}$ and modified gravity parameters will improve up toa factor $\sim2$ with respect to Planck and redshift space distortionsmeasurements. With this work we demonstrate the promising potential of EMU tocontribute to our understanding of the Universe.

Probing $\Lambda$CDM cosmology with the Evolutionary Map of the Universe survey