Turbulence and Dust Dynamics in Protoplanetary Disks with Vertical Shear Instability

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• Thomas Pfeil (LMU)
• Tuesday 02 March 2021, 13:00-14:00
• ONLINE - Details to be sent by email.

If you have a question about this talk, please contact Dr Can Cui.

Turbulence has a profound impact on the evolution of gas and dust in protoplanetary disks (PPDs), from driving the collisions and the diffusion of dust grains, to the concentration of pebbles in giant vortices, thus, facilitating planetesimal formation. The Vertical Shear Instability (VSI) is a hydrodynamic mechanism, operating in PPDs if the local rate of thermal relaxation is high enough. Previous studies of the VSI have, however, relied on the assumption of constant cooling rates, or neglected the finite coupling time between the gas particles and the dust grains. Here, I present the results of hydrodynamic simulations of PPDs with the PLUTO code that include a more realistic thermal relaxation prescription. This enables us to study the turbulence and flow structure formation caused by VSI in the optically thick and optically thin parts of the disk under consideration of the thermal dust-gas coupling.

This talk is part of the Exoplanet Seminars series.

This talk is included in these lists:

• Combined External Astrophysics Talks DAMTP
• Cosmology, Astrophysics and General Relativity
• Exoplanet Seminars
• Institute of Astronomy Talk Lists
• LCLU Departmental Talks
• ONLINE - Details to be sent by email

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