X-ray and radio signatures of the outflow from the core of the Milky Way

Evidence has mounted over the past years that outflows of matter and energy from the core of our Milky Way have shaped the observed structure of the Galaxy on a variety of larger scales. Recently, XMM-Newton maps of the central few square degrees of the Galaxy have discovered two prominent X-ray structures extending hundreds of parsecs above and below the plane, which appear to connect the Galactic Centre region to the Fermi bubbles. We proposed that these structures, constitute exhaust channels through which energy and mass, injected by a quasi-continuous train of episodic events at the Galactic Centre, are transported from the central few parsecs to the base of the Fermi bubbles. Soon after this discovery, radio maps of the same region reported evidence for the presence of ~400 pc bipolar radio bubbles tracing the same outflow. I will review our current knowledge of the physical processes occurring at the Galactic center and how these can shed light on our understanding of radio galaxies.