Search Results - "Shiota, D."
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Theory and Transport of Nearly Incompressible Magnetohydrodynamic Turbulence
Published in The Astrophysical journal (01-02-2017)“…The theory of nearly incompressible magnetohydrodynamics (NI MHD) was developed largely in the early 1990s, together with an important extension to…”
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Theory and Transport of Nearly Incompressible Magnetohydrodynamic Turbulence. IV. Solar Coronal Turbulence
Published in The Astrophysical journal (10-02-2018)“…A new model describing the transport and evolution of turbulence in the quiet solar corona is presented. In the low plasma beta environment, transverse…”
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II. Transport of Nearly Incompressible Magnetohydrodynamic Turbulence from 1 to 75 au
Published in The Astrophysical journal (01-06-2017)“…The thermal plasma beta in the solar wind and the solar corona is of the order of and . Zank et al. developed 2D and slab turbulence transport model equations…”
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Magnetohydrodynamic Simulations for Studying Solar Flare Trigger Mechanism
Published in The Astrophysical journal (20-06-2017)“…In order to understand the flare trigger mechanism, we conduct three-dimensional magnetohydrodynamic simulations using a coronal magnetic field model derived…”
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Turbulent Transport in a Three-dimensional Solar Wind
Published in The Astrophysical journal (01-03-2017)“…Turbulence in the solar wind can play essential roles in the heating of coronal and solar wind plasma and the acceleration of the solar wind and energetic…”
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Theory and Transport of Nearly Incompressible Magnetohydrodynamics Turbulence. III. Evolution of Power Anistropy in Magnetic Field Fluctuations throughout the Heliosphere
Published in The Astrophysical journal (20-12-2017)“…A theoretical model that describes the evolution of the power anisotropy in the energy-containing and inertial ranges throughout the heliosphere is developed…”
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Probing solar wind velocity from simultaneous superior solar conjunction radio science experiments of BepiColombo and Akatsuki missions
Published in Monthly notices of the Royal Astronomical Society (21-08-2024)“…ABSTRACT A radio link directly probing the inner solar corona offers the possibility to characterize solar wind properties, including velocity, density,…”
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Twist and Connectivity of Magnetic Field Lines in the Solar Active Region NOAA 10930
Published in The Astrophysical journal (10-09-2011)“…Twist and connectivity of magnetic field lines in the flare-productive active region NOAA 10930 are investigated in terms of the vector magnetograms observed…”
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MAGNETIC STRUCTURE PRODUCING X- AND M-CLASS SOLAR FLARES IN SOLAR ACTIVE REGION 11158
Published in The Astrophysical journal (10-06-2013)“…We study the three-dimensional magnetic structure of the solar active region 11158, which produced one X-class and several M-class flares on 2011 February…”
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Coronal mass ejection hits mercury: A.I.K.E.F. hybrid-code results compared to MESSENGER data
Published in Planetary and space science (01-04-2018)“…Mercury is the closest orbiting planet around the sun and is therefore embedded in an intensive and highly varying solar wind. In-situ data from the MESSENGER…”
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NONLINEAR FORCE-FREE EXTRAPOLATION OF THE CORONAL MAGNETIC FIELD BASED ON THE MAGNETOHYDRODYNAMIC RELAXATION METHOD
Published in The Astrophysical journal (01-01-2014)“…We develop a nonlinear force-free field (NLFFF) extrapolation code based on the magnetohydrodynamic (MHD) relaxation method. We extend the classical MHD…”
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12
POLAR FIELD REVERSAL OBSERVATIONS WITH HINODE
Published in The Astrophysical journal (10-07-2012)“…We have been monitoring yearly variation in the Sun's polar magnetic fields with the Solar Optical Telescope aboard Hinode to record their evolution and…”
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Predicting Observational Signatures of Coronal Heating by Alfvén Waves and Nanoflares
Published in The Astrophysical journal (20-11-2008)“…Alfven waves can dissipate their energy by means of nonlinear mechanisms, and constitute good candidates to heat and maintain the solar corona to the observed…”
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BUILDUP AND RELEASE OF MAGNETIC TWIST DURING THE X3.4 SOLAR FLARE OF 2006 DECEMBER 13
Published in The Astrophysical journal (20-11-2012)“…We analyze the temporal evolution of the three-dimensional magnetic structure of the flaring active region (AR) NOAA 10930 by using the nonlinear force-free…”
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A STUDY OF THE HELIOCENTRIC DEPENDENCE OF SHOCK STANDOFF DISTANCE AND GEOMETRY USING 2.5D MAGNETOHYDRODYNAMIC SIMULATIONS OF CORONAL MASS EJECTION DRIVEN SHOCKS
Published in The Astrophysical journal (10-11-2012)“…We perform four numerical magnetohydrodynamic simulations in 2.5 dimensions (2.5D) of fast coronal mass ejections (CMEs) and their associated shock fronts…”
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Evolution of Coronal Mass Ejection Morphology with Increasing Heliocentric Distance. I. Geometrical Analysis
Published in The Astrophysical journal (20-04-2011)“…At launch, coronal mass ejections (CMEs) are often approximated as locally cylindrical objects with circular cross sections. However, CMEs have long been known…”
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Three-dimensional MHD modeling of the solar wind structures associated with 13 December 2006 coronal mass ejection
Published in Journal of Geophysical Research - Space Physics (01-10-2009)“…A 3‐D magnetohydrodynamic (MHD) simulation is performed to reconstruct the interplanetary propagation of a coronal mass ejection (CME) that occurred on 13…”
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Internal structure of a coronal mass ejection revealed by Akatsuki radio occultation observations
Published in Journal of geophysical research. Space physics (01-07-2015)“…A coronal mass ejection (CME) was observed at the heliocentric distance of 12.7 Rυ by radio occultation measurements using the Akatsuki spacecraft. The…”
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Air shower simulation for WASAVIES: warning system for aviation exposure to solar energetic particles
Published in Radiation protection dosimetry (01-10-2014)“…WASAVIES, a warning system for aviation exposure to solar energetic particles (SEPs), is under development by collaboration between several institutes in Japan…”
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SOLAR RADIO TYPE-I NOISE STORM MODULATED BY CORONAL MASS EJECTIONS
Published in The Astrophysical journal (10-01-2012)“…The first coordinated observations of an active region using ground-based radio telescopes and the Solar Terrestrial Relations Observatory (STEREO) satellites…”
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