Scales in Planet Formation: Efficient Algorithms for Planet-Gas-Dust Interaction — Pablo Benitez (Universidad Adolfo Ibáñez)

Planet formation is a central topic in modern astrophysics, yet unraveling the physical processes that shape planetary architectures requires bridging vast spatial and temporal scales. Simulating the coupled evolution of gas and solids over migration timescales remains computationally prohibitive for traditional hydrodynamical methods. In this talk, I will present a suite of novel numerical methods developed to overcome these bottlenecks. First, I will discuss stiff-stable integrators for multi-fluid dust dynamics that reduce the computational complexity of momentum coupling, enabling efficient simulations of particle-size distributions. Second, I will introduce a Rapid Advection scheme that bypasses standard CFL limitations for high-velocity flows on non-uniform grids. Finally, I will present a new Comoving Framework for planet migration. By utilizing a coordinate transformation that keeps the planet stationary relative to the mesh, this framework reduces numerical diffusion and computational cost by over an order of magnitude compared to fixed-grid inertial frames. I will show how these tools are currently being applied to study critical phenomena, including the impact of dust torques on migration tracks.

Horarios: November 25, 2025 15:30

Publicado por: Gijs Mulders