| The co-evolution of supermassive black holes (SMBHs) and their host galaxies is likely regulated by complex feedback mechanisms involving multi-phase and multi-scale outflows. In luminous quasars, black hole driven outflows are believed to make a major contribution by significantly impacting the host galaxy interstellar (ISM) and circumgalactic (CGM) media. Here, we investigate the gaseous environment and outflow properties of a sample of 40 luminous quasars bridging the Epoch of Reionization and Cosmic Noon (z∼5). Our study provides an analysis of both absorption and emission line systems using data from X-Shooter@VLT and ALMA. In particular, X-Shooter enables the study of CIV and NV intrinsic absorbers against the quasar rest-frame UV continuum, which are likely associated with AGN driven ionized outflows. ALMA, on the other hand, allows us to study the distribution of the mildly ionized gas through the [CII]158μm emission line arising from the ISM and CGM. By combining these probes, we aim to achieve a multi-phase characterization of outflows in the high-redshift Universe. This comprehensive analysis is essential for understanding the first feedback mechanisms occurring in the Post-Reionization Universe. |
