Astronomy & Astrophysics Seminar: Non-Equilibrium Ionization in Galactic Bubbles and Winds

Zoom: https://tau-ac-il.zoom.us/j/89636068691?pwd=YkVoWG9laTFPZHVENWovQ1FWczUvQT09

Abstract:

Supernovae-driven bubbles and winds form a major part of the feedback mechanism that controls the flow of baryonic matter in galaxies. Observational estimates of the momentum deposition by supernovae, and mass and energy outflow in galactic winds depend on theoretical modeling of the emission/absorption properties of these systems. Such emission/absorption properties are highly dependent on the ionization state of the plasma which is often assumed to be in equilibrium. The assumption, however, becomes invalid for rapidly evolving plasma. In the talk, I will describe our recent efforts to model some of these systems by considering a self-consistent non-equilibrium ionization network and frequency-dependent radiative transport physics. I will show how the addition of the new physics changes our basic understanding of these systems and what it implies for the observations.

Seminar Organizer: Dr. Iair Arcavi