Grid-Based Simulations for Misaligned Circumbinary Disks and Disk Breaking - Zhaohuan Zhu

Explore grid-based simulations for misaligned circumbinary disks and disk breaking in this 45-minute conference talk from the Building Bridges: Towards a Unified Picture of Stellar and Black Hole Binary Accretion and Evolution Conference at KITP. Delve into the evolution of circumbinary gas and its influence on embedded binary systems, from stellar to supermassive black hole scales. Examine observational signatures, numerical techniques, and recent progress in modeling these systems. Discover the similarities between massive black hole binaries and stellar binaries, and learn about crucial next steps in advancing our understanding. Cover topics including protoplanetary disks, transitional disks, disk breaking by planets, inclined planets in disks, observational signatures, circumbinary disk configurations, vortex formation, and specific case studies like GW Ori.

Intro
Theory VS Observations
Protoplanetary Disks
Surprises: Transitional Disks (broken disks)
Broken disks (circumprimary disks)
Transitional disks (cavities)
Disk breaking by a planet (how massive needed)
Grid-based simulations for inclined planets
Precession code tests
Misaligned planets in disks
MCRT: Observational Signatures
Observational Signatures (shadow changes)
Circumbinary disks: Two stable configurations
Athena++ simulations for polar circumbinary disks
Vortex Formation and Evolution
Circumbinary disk breaking
Disk Breaking for Polar Disks
On Simulation Setup
Conclusion
The disk breaks when the gap is deep enough!
Disk Breaking for GW Ori (coplanar)