Astronomy Colloquium: Jeffrey Fung
Jeffrey Fung from the Institute for Advanced Study will be the featured speaker at an upcomig Department of Physics and Astronomy colloquium. His talk is titled, "Circumplanetary Disk Dynamics and Planet Accretion."
The dynamics of circumplanetary disks (CPDs), mini disks formed around protoplanets embedded in their natal circumstellar disks, plays anessential role in planet formation. The limited parameter spaceexplored and the lack of consensus on numerical approaches in previouswork have led to disagreeing reports even on the basic properties ofCPDs. Using the hydro codes PEnGUIn and Athena++, we perform a seriesof 3D hydrodynamics simulations to measure CPD sizes, masses, androtation rates as functions of planet mass, in both the isothermal andadiabatic limits. These limits bracket the thermal evolution ofplanetary atmospheres, providing insight into their gas accretionrates. Additionally, the 3D flow dynamics from our simulations allow usto trace trajectories of solids and model their accretion onto planets. Fung will give an overview of these results and discuss their implications on gas giant formation.
There will be refreshements starting at 3:30 p.m.
Admission is free and open to all.
Department of Physics and Astronomy