ESO DOI Service

• Santos, Mario G. [South African Radio Astronomy Observatory, Cape Town, South Africa; Department of Physics & Astronomy, University of the Western Cape, Cape Town, South Africa]
• Camera, Stefano [Department of Physics & Astronomy, University of the Western Cape, Cape Town, South Africa; Department of Physics, University of Turin, Italy; National Institute for Nuclear Physics, Turin, Italy; INAF–Turin Astrophysical Observatory, Italy]
• Chen, Zhaoting [Institute for Astronomy, Royal Observatory, University of Edinburgh, UK]
• Cunnington, Steven [Jodrell Bank Centre for Astrophysics, Department of Physics & Astronomy, University of Manchester, UK]
• Fonseca, Jose [Institute of Astrophysics and Space Science, University of Porto, Portugal; Department of Physics & Astronomy, University of the Western Cape, Cape Town, South Africa]

We discuss the possible synergies for cosmology between SKAO and ESO facilities, focusing on the combinations SKA-Mid with the Multi-Object Spectrograph Telescope (4MOST) instrument built for ESO’s Visible and Infrared Survey Telescope for Astronomy (VISTA) and SKA-Low with ESO's Extremely Large Telescope (ELT) multi-object spectrograph MOSAIC. Combining multiple tracers allows for tackling systematics and lifting parameter degeneracies. It will play a crucial role in the pursuit of precision cosmology.