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Explore a comprehensive astrophysics seminar examining how gas-rich environments fundamentally alter stellar dynamics across multiple astronomical scales. Learn how the presence of gas reshapes everything from binary star systems to nuclear star clusters at galactic centers. The lecture presents a generalized Bahcall-Wolf distribution that accounts for gas effects, explaining how this leads to steeper stellar cusps and increased rates of tidal disruption events in galactic nuclei. Discover how gas interactions challenge traditional binary classification systems by extending the soft-hard boundary and creating a "shielding radius" where binaries can harden rather than soften. The presentation also covers implications for common envelope formation in globular clusters with multiple stellar populations and, time permitting, examines the von-Zeipel Lidov Kozai mechanism in gas-rich environments like active galactic nuclei. This 56-minute talk by Mor Rozner (Cambridge & IAS) offers valuable insights into how gas fundamentally transforms our understanding of stellar dynamics across cosmic scales.
