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Takayoshi Sano

Researcher at Osaka University

Publications -  133
Citations -  4568

Takayoshi Sano is an academic researcher from Osaka University. The author has contributed to research in topics: Magnetic field & Magnetohydrodynamics. The author has an hindex of 30, co-authored 126 publications receiving 4226 citations. Previous affiliations of Takayoshi Sano include University of Cambridge & University of Maryland, College Park.

Papers
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Journal ArticleDOI

Magnetorotational Instability in Protoplanetary Disks. II. Ionization State and Unstable Regions

Takayoshi Sano, +3 more
- 01 Nov 2000 - 
TL;DR: In this paper, the authors investigated the magnetic instability in protoplanetary disks and found that the inner region of a disk is magnetorotationally stable due to ohmic dissipation.
Journal ArticleDOI

Angular momentum transport by magnetohydrodynamic turbulence in accretion disks: gas pressure dependence of the saturation level of the magnetorotational instability

Takayoshi Sano, +6 more
- 10 Apr 2004 - 
TL;DR: In this article, the saturation level of the magnetorotational instability (MRI) was investigated using three-dimensional MHD simulations, where the shearing box approximation is adopted and the vertical component of gravity is ignored, so that the evolution of the MRI is followed in a small local part of the disk.
Journal ArticleDOI

Angular Momentum Transport by MHD Turbulence in Accretion Disks: Gas Pressure Dependence of the Saturation Level of the Magnetorotational Instability

Takayoshi Sano, +3 more
- 18 Dec 2003 - 
TL;DR: In this paper, the saturation level of the magnetorotational instability (MRI) was investigated using three-dimensional MHD simulations, where the shearing box approximation is adopted and the vertical component of gravity is ignored, so that the evolution of the MRI is followed in a small local part of the disk.
Journal ArticleDOI

The Effect of the Hall Term on the Nonlinear Evolution of the Magnetorotational Instability. II. Saturation Level and Critical Magnetic Reynolds Number

Takayoshi Sano, +1 more
- 20 Sep 2002 - 
TL;DR: The nonlinear evolution of the magnetorotational instability (MRI) in weakly ionized accretion disks, including the effect of the Hall term and ohmic dissipation, was investigated using local three-dimensional MHD simulations and various initial magnetic field geometries.
Journal ArticleDOI

The Effect of the Hall Term on the Nonlinear Evolution of the Magnetorotational Instability. I. Local Axisymmetric Simulations

Takayoshi Sano, +1 more
- 01 May 2002 - 
TL;DR: In this paper, the effect of the Hall term on the evolution of magnetorotational instability (MRI) in weakly ionized accretion disks is investigated using local axisymmetric simulations.