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astro-ph.EP2026

Ring Spacing from a Fourth-Order Radial Feedback Green Function in a Keplerian Accretion Disk

Yiwei Bao, Can Cui

ALMA observations of protoplanetary disks reveal ubiquitous concentric ring structures whose origin remains debated. We present an exactly solvable local model for ring spacing in…

astro-ph.EP2025

Rossby wave instability in weakly ionized protoplanetary disks. II. radial B-fields

Can Cui, Zijin Wang

Building on our first paper in this series, we investigate the impact of radial magnetic fields and non-ideal magnetohydrodynamic (MHD) effects - specifically, Ohmic resistivity, H…

astro-ph.EP2025

Dust Growth in ALMA Rings: II. Dusty Rossby Wave Instability

Can Cui, Konstantin Gerbig, Ya-Ping Li +5

Annular substructures serve as ideal venues for planetesimal formation. In this series, we investigate the linear stage of dust growth within rings. The first paper examines the gl…

astro-ph.EP2025

Rossby wave instability in weakly ionized protoplanetary disks. I. azimuthal or vertical B-fields

Can Cui, Ashutosh Tripathi, Cong Yu +2

Rossby wave instability (RWI) is considered the underlying mechanism to crescent-shaped azimuthal asymmetries, discovered in (sub-)millimeter dust continuum of many protoplanetary…

astro-ph.EP2024

Vertical Shear Instability with Partially Reflecting Boundary Conditions

Yuzi Wu, Cong Yu, Can Cui

The vertical shear instability (VSI) is widely believed to be effective in driving turbulence in protoplanetary disks. Prior studies on VSI exclusively exploit the reflecting bound…