435 citations · 5.6k across the 113 of their papers we have counts for
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Interdependence of Electric Discharge and The Magnetorotational Instability in Protoplanetary Disks
Takayuki Muranushi, Satoshi Okuzumi, Shu-ichiro Inutsuka
We study how the magnetorotational instability (MRI) in protoplanetary disks is affected by the electric discharge caused by the electric field in the resistive MHD. We have perfor…
Radiation Magnetohydrodynamic Simulations of Protostellar Collapse: Protostellar Core Formation
Kengo Tomida, Kohji Tomisaka, Tomoaki Matsumoto +4
We report the first three-dimensional radiation magnetohydrodynamic (RMHD) simulations of protostellar collapse with and without Ohmic dissipation.We take into account many physica…
Planetesimal Formation in Magnetorotationally Dead Zones: Critical Dependence on the Net Vertical Magnetic Flux
Satoshi Okuzumi, Shigenobu Hirose
Turbulence driven by magnetorotational instability (MRI) affects planetesimal formation by inducing diffusion and collisional fragmentation of dust particles. We examine conditions…
Rapid Coagulation of Porous Dust Aggregates Outside the Snow Line: A Pathway to Successful Icy Planetesimal Formation
Satoshi Okuzumi, Hidekazu Tanaka, Hiroshi Kobayashi +1
Rapid orbital drift of macroscopic dust particles is one of the major obstacles against planetesimal formation in protoplanetary disks. We reexamine this problem by considering por…
Geometrical Cross Sections of Dust Aggregates and a Compression Model for Aggregate Collisions
Toru Suyama, Koji Wada, Hidekazu Tanaka +1
Geometrical cross sections of dust aggregates determine their coupling with disk gas, which governs their motions in protoplanetary disks. Collisional outcomes also depend on geome…