Abstract
The newly launched eRosita X-ray satellite revealed two gigantic bubbles extending to ∼ 80 ◦ above and below the Galactic center (GC) in the Milky Way Galaxy. The morphology of these eRosita bubbles bears a remarkable resemblance to the Fermi bubbles discovered in the gamma-ray band by the Fermi Gamma-ray Space Telescope in 2010, suggesting that they may share the same origin. The symmetry about the GC of the Fermi/eRosita bubbles suggests that they likely originate from powerful energy injections from the GC sometime in the past, such as a nuclear starburst, or activity from the central supermassive black hole (SMBH). In this proceedings, I will briefly review the progress made in terms of our understanding of the physical origin of the bubbles. In particular, I will highlight the importance of the new observational constraints brought by the eRosita mission, and discuss recent simulation results that support a scenario where the Fermi/eRosita bubbles are simultaneously generated by past jet activity of the SMBH a few million years ago.