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Spirals, rings, and vortices shaped by shadows in protoplanetary disks: from radiative hydrodynamical simulations to observable signatures
Alexandros Ziampras, Cornelis P. Dullemond, Tilman Birnstiel +2
Numerous protoplanetary disks exhibit shadows in scattered light observations. These shadows are typically cast by misaligned inner disks and are associated with observable structu…
Dusty substructures induced by planets in ALMA disks: how dust growth and dynamics changes the picture
Alexandros Ziampras, Prakruti Sudarshan, Cornelis P. Dullemond +4
Protoplanetary disks exhibit a rich variety of substructure in millimeter continuum emission, often attributed to unseen planets. As these planets carve gaps in the gas, dust parti…
Buoyancy torques prevent low-mass planets from stalling in low-turbulence radiative disks
Alexandros Ziampras, Richard P. Nelson, Sijme-Jan Paardekooper
Low-mass planets migrating inwards in laminar protoplanetary disks (PPDs) experience a dynamical corotation torque, which is expected to slow down migration to a stall. However, ba…
Migration of low-mass planets in inviscid disks: the effect of radiation transport on the dynamical corotation torque
Alexandros Ziampras, Richard P. Nelson, Sijme-Jan Paardekooper
Low-mass planets migrate in the type-I regime. In the inviscid limit, the contrast between the vortensity trapped inside the planet's corotating region and the background disk vort…
Orbital evolution of close binary systems: comparing viscous and wind-driven circumbinary disc models
George Turpin, Richard Nelson
Previous work has shown that interactions between a central binary system and a circumbinary disc (CBD) can lead to the binary orbit either shrinking or expanding, depending on the…