Search Results - "Hada, Tohru"

Seasonal variation and geomagnetic storm index effects on the proton flux response in the South Atlantic Anomaly by test particle simulations by Girgis, Kirolosse M., Hada, Tohru, Matsukiyo, Shuichi

“…In order to estimate the proton flux variations occurring in the South Atlantic Anomaly (SAA) caused by the geodipole tilting angle and the Dst index…”
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Solar wind parameter and seasonal variation effects on the South Atlantic Anomaly using Tsyganenko Models by Girgis, Kirolosse M., Hada, Tohru, Matsukiyo, Shuichi

“…We studied the space weather effects on the South Atlantic Anomaly (SAA) magnetic response using Tsyganenko models. For the physical parameters characterizing…”
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Density response to magnetic field fluctuation in the foreshock plasma by Narita, Yasuhito, Hada, Tohru

“…The foreshock plasma exhibits large-amplitude disturbance in the plasma density and the magnetic field. The question of the density response to the magnetic…”
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Effect of Upstream ULF Waves on the Energetic Ion Diffusion at the Earth's Foreshock. I. Theory and Simulation by Otsuka, Fumiko, Matsukiyo, Shuichi, Kis, Arpad, Nakanishi, Kento, Hada, Tohru

“…Field-aligned diffusion of energetic ions in the Earth's foreshock is investigated by using the quasi-linear theory (QLT) and test particle simulation…”
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Inner radiation belt simulations of the proton flux response in the South Atlantic Anomaly during the Geomagnetic Storm of 15 May 2005 by Girgis, Kirolosse M., Hada, Tohru, Matsukiyo, Shuichi, Yoshikawa, Akimasa

“…A test particle simulation code was developed to simulate the inner proton belt response during the intense geomagnetic storm of 15 May 2005. The guiding…”
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Diffusive shock acceleration of cosmic rays from two stationary shocks by Nakanotani, Masaru, Hada, Tohru, Matsukiyo, Shuichi

“…Diffusive shock acceleration (Fermi acceleration) of cosmic rays in a system containing two shock waves is investigated using test particle simulations and…”
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Pitch angle distributions of electrons at dipolarization sites during geomagnetic activity: THEMIS observations by Wang, Kaiti, Lin, Ching-Huei, Wang, Lu-Yin, Hada, Tohru, Nishimura, Yukitoshi, Turner, Drew L., Angelopoulos, Vassilis

“…Changes in pitch angle distributions of electrons with energies from a few eV to 1 MeV at dipolarization sites in Earth's magnetotail are investigated…”
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Phase coherence among the Fourier modes and non-Gaussian characteristics in the Alfvén chaos system by Nariyuki, Yasuhiro, Sasaki, Makoto, Kasuya, Naohiro, Hada, Tohru, Yagi, Masatoshi

“…Abstract Non-Gaussian characteristics in time series of the Alfvén chaos system are discussed. The phase coherence index, a measure defined by using the…”
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Shock front nonstationarity of supercritical perpendicular shocks by Hada, Tohru, Oonishi, Makiko, Lembège, Bertrand, Savoini, Philippe

“…The shock front nonstationarity of perpendicular shocks in super‐critical regime is analyzed by examining the coupling between “incoming” and “reflected” ion…”
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Density fluctuations induced by modulational instability of parallel propagating alfvén waves with βf ∼ 1 by NARIYUKI, Yasuhiro, HADA, Tohru

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Magnetohydrodynamic parametric instabilities of parallel propagating incoherent Alfvén waves by NARIYUKI, Yasuhiro, HADA, Tohru

“…Abstract Numerical experiments for parametric instabilities of incoherent Alfvén waves in the context of one dimensional Hall-MHD equation sets are studied…”
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Rapid evolution of magnetic decreases (MDs) and discontinuities in the solar wind: ACE and Cluster by Tsurutani, Bruce T., Guarnieri, Fernando L., Lakhina, Gurbax S., Hada, Tohru

“…An experiment was conducted to identify and measure the same magnetic decreases (MDs) and interplanetary discontinuities at two different points in space…”
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Acceleration of charged particles by large amplitude MHD waves: Effect of wave spatial correlation by Kuramitsu, Yasuhiro, Hada, Tohru

“…We discuss energy diffusion and acceleration of charged particles by large amplitude magnetohydrodynamic (MHD) waves by test particle simulations, paying…”
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Trajectory Analysis of Galactic Cosmic Rays Invading into the Heliosphere by Yoshida, Kotaro, Matsukiyo, Shuichi, Shimokawa, Kesuke, Washimi, Haruichi, Hada, Tohru

“…Abstract The trajectories of galactic cosmic-ray protons invading the heliosphere are investigated by using numerical simulations. A time stationary global…”
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Anomalous diffusion of cosmic rays in magnetic field turbulence : Linkage between diffusion statistics and turbulence statistics by OTSUKA, Fumiko, HADA, Tohru

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Review of the August 1972 and March 1989 (Allen) Space Weather Events: Can We Learn Anything New From Them? by Tsurutani, Bruce T., Sen, Abhijit, Hajra, Rajkumar, Lakhina, Gurbax S., Horne, Richard B., Hada, Tohru

“…Updated summaries of the August 1972 and March 1989 space weather events have been constructed. The features of these two events are compared to the Carrington…”
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Effect of Upstream ULF Waves on the Energetic Ion Diffusion at the Earth's Foreshock. II. Observations by Kis, Arpad, Matsukiyo, Shuichi, Otsuka, Fumiko, Hada, Tohru, Lemperger, Istvan, Dandouras, Iannis, Barta, Veronika, Facsko, Gabor

“…This study reports observations of energetic ions upstream of the Earth's quasi-parallel bow shock by Cluster at times when interspacecraft separation…”
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Shock Modification by Cosmic-Ray-Excited Turbulences by Terasawa, Toshio, Hada, Tohru, Matsukiyo, Shuichi, Oka, Mitsuo, Bamba, Aya, Yamazaki, Ryo

“…In cosmic-ray-mediated shocks large amplitude Alfvén waves are believed to be generated by accelerated cosmic ray particles. The enhanced magnetic pressure…”
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Electromagnetic Structure and Electron Acceleration in Shock-Shock Interaction by Nakanotani, Masaru, Matsukiyo, Shuichi, Hada, Tohru, Mazelle, Christian X.

“…A shock-shock interaction is investigated by using a one-dimensional full particle-in-cell simulation. The simulation reproduces the collision of two…”
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Terrestrial and Martian space weather: A complex systems approach by Chian, Abraham, Miranda, Rodrigo, Bertucci, Cesar, Blanco-Cano, Xóchitl, Borovsky, Joe, Dasso, Sergio, Echer, Ezequiel, Franco, Adriane, Girgis, Kirolosse M., González-Esparza, J. Américo, Hada, Tohru, Hasegawa, Hiroshi, Hsieh, Syau-Yun, Kajdič, Primoz, Mazelle, Christian, Rempel, Erico, Rojas-Castillo, Diana, Sánchez-Cano, Beatriz, Sibeck, David, Stepanova, Marina, Valdés-Galicia, José, Valdivia, Juan

“…A comparative overview of Terrestrial and Martian space weather is presented, with emphasis on applying the tools of complexity and nonlinear dynamics to study…”
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