Title: Galactic bubbles and winds

Speaker: Dr. Karthick Sarkar, Racah Institute of Physics, Hebrew University of Jerusalem

Abstract: Energy produced by supernovae or supermassive black holes play a major role in dictating the evolution of galaxies. The produced energy is directly responsible for heating the star-forming gas in the interstellar medium or stopping the gas to reach the galaxy, thus suppressing overall star formation. The interaction between the produced energy and the interstellar medium is often mediated by bubbles and winds, such as the gamma-ray bubbles (known as the Fermi Bubbles) in our Galaxy. Understanding such processes require multi-wavelength observations and a detailed theoretical understanding of these bubbles and winds.

In the talk, I will present some of my recent works to understand how bubbles and winds produced by supernovae and supermassive black holes interact with the interstellar medium and their observational signatures. I will also present my works on the state-of-the-art numerical simulations that have been successful to discover so far unknown observational signatures in these systems and are bringing us much closer to bridging the gap between theory and observations in the interstellar medium. I will finally discuss possible future directions in this research field.