Physics Colloquium: Andrew Fox
March 4 | 4:00 pm - 5:00 pm
Title: Gas Flows in the Milky Way Halo
Abstract: Gas flows play crucial roles in galaxy evolution. Inflowing gas provides fuel for new star formation, while outflowing gas carries away the chemically-enriched products from earlier generations of stars. In the Milky Way, we have a front-row seat for viewing the multi-phase gas flows that circulate material between the Galactic disk and halo. I will introduce the gas flows in the Milky Way halo, and then focus on two prominent examples: the Fermi Bubbles, a giant pair of outflowing lobes surrounding the Galactic Center, and the Magellanic Stream, an interwoven tail of gas filaments trailing the Magellanic Clouds, two satellite galaxies in orbit around the Milky Way. Recent observations from the Hubble Space Telescope and numerical simulations have provided new insight into the origin of the Fermi Bubbles and the Magellanic Stream, revealing the mechanisms by which the Milky Way exchanges mass with its surroundings and continues to grow and evolve over time.
Host: Rongmon Bordoloi