High energy view of galactic center feedback
The growth of galaxies in the local Universe is fundamentally influenced by the physical conditions of the hot phase of the interstellar and circumgalactic medium, as well as its dynamic interactions with other phases through processes such as outflows and re-condensation. X-ray data from the eROSITA All-Sky Survey is providing an unprecedented view of the hot plasma within the Galactic ecosystem. These data capture emission from the hot interstellar medium to the hot circumgalactic medium, extending from the disk-halo interface to regions beyond the virial radius of the Milky Way.
In addition, deep X-ray observations of the Galactic center with XMM-Newton and Chandra have revealed evidence of energetic activity within the central degree of the Milky Way, including signatures of an outflow on scales of hundreds of parsecs. This localized activity appears to be linked to a larger-scale Galactic outflow extending over tens of kiloparsecs.
This review highlights recent advancements in our understanding of the hot phase of the Milky Way, emphasizing the role of Galactic outflows in shaping the hot circumgalactic medium and their broader implications for galaxy evolution.
