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Explore low collisionality effects in hot accretion flows in this 20-minute conference talk by Vedant Dhruv from the University of Illinois, presented at the Kavli Institute for Theoretical Physics. Examine how reduced particle collisions influence plasma behavior in the extreme environments surrounding black holes and neutron stars, where hot gas spirals inward under intense gravitational forces. Learn about the fundamental plasma physics processes that govern accretion flow dynamics when traditional collision-dominated assumptions break down, and discover how these effects impact our understanding of energy transport, magnetic field evolution, and observational signatures from accreting compact objects. Gain insights into the theoretical frameworks and computational approaches used to model these exotic astrophysical systems, where relativistic effects and extreme temperatures create conditions unlike anything found in terrestrial laboratories.
