Search Results - "Hirose, Shigenobu"
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What is the Numerically Converged Amplitude of Magnetohydrodynamics Turbulence in Stratified Shearing Boxes?
Published in The Astrophysical journal (10-01-2010)“…We study the properties of the turbulence driven by the magnetorotational instability in a stratified shearing box with outflow boundary conditions and an…”
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DEPENDENCE OF THE SATURATION LEVEL OF MAGNETOROTATIONAL INSTABILITY ON GAS PRESSURE AND MAGNETIC PRANDTL NUMBER
Published in The Astrophysical journal (20-07-2015)“…ABSTRACT A large set of numerical simulations of MHD turbulence induced by the magnetorotational instability is presented. Revisiting the previous survey…”
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Turbulent Stresses in Local Simulations of Radiation-dominated Accretion Disks, and the Possibility of the Lightman-Eardley Instability
Published in The Astrophysical journal (10-10-2009)“…We present the results of a series of radiation MHD simulations of a local patch of an accretion disk, with a fixed vertical gravity profile but with different…”
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Magnetically Driven Accretion in the Kerr Metric. III. Unbound Outflows
Published in The Astrophysical journal (20-02-2005)“…We have carried out fully relativistic numerical simulations of accretion disks in the Kerr metric. In this paper we focus on the unbound outflows that emerge…”
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Three-Dimensional Simulations of Vertical Magnetic Flux in the Immediate Vicinity of Black Holes
Published in The Astrophysical journal (20-10-2009)“…This article reports on three-dimensional MHD simulations of non-rotating and rapidly rotating black holes and the adjacent black hole accretion disk…”
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Magnetically Driven Accretion Flows in the Kerr Metric. IV. Dynamical Properties of the Inner Disk
Published in The Astrophysical journal (01-04-2005)“…This paper continues the analysis of a set of general relativistic three-dimensional MHD simulations of accreting tori in the Kerr metric with different black…”
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Magnetically Driven Accretion Flows in the Kerr Metric. II. Structure of the Magnetic Field
Published in The Astrophysical journal (10-05-2004)“…We present a detailed analysis of the magnetic field structure found in a set of four general relativistic three-dimensional MHD simulations of accreting tori…”
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Magnetic turbulence and thermodynamics in the inner region of protoplanetary discs
Published in Monthly notices of the Royal Astronomical Society (21-04-2015)“…Using radiation magnetohydrodynamics simulations with realistic opacities and equation of state, and zero net magnetic flux, we have explored thermodynamics in…”
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Modeling Magnetorotational Turbulence in Protoplanetary Disks with Dead Zones
Published in The Astrophysical journal (01-12-2011)“…Turbulence driven by magnetorotational instability (MRI) crucially affects the evolution of solid bodies in protoplanetary disks. On the other hand, small dust…”
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10
Non-linear outcome of gravitational instability in an irradiated protoplanetary disc
Published in Monthly notices of the Royal Astronomical Society (01-05-2019)Get full text
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Distribution of Faraday Rotation Measure in Jets from Active Galactic Nuclei. II. Prediction from Our Sweeping Magnetic Twist Model for the Wiggled Parts of Active Galactic Nucleus Jets and Tails
Published in The Astrophysical journal (10-06-2004)“…Distributions of Faraday rotation measure (FRM) and the projected magnetic field derived by a three-dimensional simulation of MHD jets are investigated based…”
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12
Gravito-turbulence in irradiated protoplanetary discs
Published in Monthly notices of the Royal Astronomical Society (01-07-2017)“…Abstract Using radiation hydrodynamics simulations in a local stratified shearing box with realistic equations of state and opacities, we explored the outcome…”
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Oxygen isotope exchange between molten silicate spherules and ambient water vapor with nonzero relative velocity: Implication for chondrule formation environment
Published in Icarus (New York, N.Y. 1962) (15-11-2023)“…Oxygen isotope compositions of chondrules reflect the environment of chondrule formation and its spatial and temporal variations. Here, we present a…”
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Radiation-Dominated Disks are Thermally Stable
Published in The Astrophysical journal (20-01-2009)“…When the accretion rate is more than a small fraction of Eddington, the inner regions of accretion disks around black holes are expected to be radiation…”
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CONVECTION CAUSES ENHANCED MAGNETIC TURBULENCE IN ACCRETION DISKS IN OUTBURST
Published in The Astrophysical journal (20-05-2014)“…We present the results of local, vertically stratified, radiation magnetohydrodynamic (MHD) shearing box simulations of magneto-rotational instability (MRI)…”
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16
Disk Accretion onto a Magnetized Young Star and Associated Jet Formation
Published in Publications of the Astronomical Society of Japan (01-04-1997)“…We investigated disk accretion onto a magnetized young star by performing MHD numerical simulations. We considered the case in which the stellar magnetosphere…”
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Convective quenching of field reversals in accretion disc dynamos
Published in Monthly notices of the Royal Astronomical Society (01-06-2017)Get full text
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Convection Enhances Magnetic Turbulence in AM CVn Accretion Disks
Published in The Astrophysical journal (10-04-2018)“…We present the results of local, vertically stratified, radiation magnetohydrodynamic shearing-box simulations of magnetorotational instability (MRI)…”
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PLANETESIMAL FORMATION IN MAGNETOROTATIONALLY DEAD ZONES: CRITICAL DEPENDENCE ON THE NET VERTICAL MAGNETIC FLUX
Published in The Astrophysical journal (2012)Get full text
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20
Magnetic Field Structure in Black-Hole Accretion Flows
Published in Progress of theoretical physics. Supplement (01-01-2004)“…We present an analysis of the magnetic field structure found in a set of four general relativistic 3D MHD simulations of accreting tori in the Kerr metric with…”
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