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Understanding the initial stages of planet-driven gap formation

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If you have a question about this talk, please contact Roger Dufresne .

When planets form in protoplanetary discs, they interact gravitationally with the gas in the disc. This interaction excites spiral density waves which, when they dissipate, can cause the formation of gaps and rings. These gaps can be seen in observations from ALMA and JSWT , and could be used to infer the existence and location of planets. However, interpreting these observations requires robust models of how the planet and disc interact and how gaps form. I will show new work that provides a linear relationship between the angular momentum deposition caused by a planet and the resultant surface density evolution. I will discuss how this analytic model can help us understand the evolution of gap structures in viscous and inviscid discs.

This talk is part of the DAMTP Astrophysics Seminars series.

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