Date: Wednesday 27-Mar-2024
Time: 11:30-12:30 pm
Location: PSC 1136
Speaker: Jiaru Li (Northwestern University)
Title: Eccentric Protoplanetary Disks: Theory and Applications
Abstract: High-resolution images taken by ALMA have shown that protoplanetary disks commonly have substructures. The origin of these substructures is one of the most important questions in the planet formation theory. I will discuss the theory related to the eccentricity of protoplanetary disks, which is a m=1 azimuthal substructure. The first part of my talk will introduce the eccentric mode instability (EMI), which is a hydrodynamical process that allows a massive disk to naturally become eccentric due to its self-gravity and the non-adiabatic effects associated with gas cooling. Then, the second part of my talk will focus on two "applications" of disk eccentricity to the formation and dynamical evolution of exoplanets: (1) I will show that eccentric mode instability can lead to the formation of multiple gaps and rings in protoplanetary disks; (2) I will present a new mechanism for generating large planet orbital eccentricity via the resonance sweeping induced by a dispersing eccentric disk.
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Past CTC Lunch seminars.
For other questions, contact the CTC Lunch host: Matt Nixon
SPECIAL ACCOMMODATIONS:
Special accommodations for individuals with disabilities can be made by calling (301) 405-3001. It would be appreciated if we are notified at least one week in advance.
