140 citations · 635 across the 16 of their papers we have counts for
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Magnetohydrodynamic simulation of coronal mass ejections using interplanetary scintillation data observed from radio sites ISEE and LOFAR
Kazumasa Iwai, Richard A. Fallows, Mario M. Bisi +4
Interplanetary scintillation (IPS) is a useful tool for detecting coronal mass ejections (CMEs) throughout interplanetary space. Global magnetohydrodynamic (MHD) simulations of the…
Validation of Coronal Mass Ejection Arrival-Time Forecasts by Magnetohydrodynamic Simulations based on Interplanetary Scintillation Observations
Kazumasa Iwai, Daikou Shiota, Munetoshi Tokumaru +3
Coronal mass ejections (CMEs) cause various disturbances of the space environment; therefore, forecasting their arrival time is very important. However, forecasting accuracy is hin…
Development of a coronal mass ejection arrival time forecasting system using interplanetary scintillation observations
Kazumasa Iwai, Daikou Shiota, Munetoshi Tokumaru +3
Coronal mass ejections (CMEs) cause disturbances in the environment of the Earth when they arrive at the Earth. However, the prediction of the arrival of CMEs still remains a chall…
Comparative Study of Microwave Polar Brightening, Coronal Holes, and Solar Wind Over the Solar Poles
Ken'ichi Fujiki, Kiyoto Shibasaki, Seiji Yashiro +3
We comparatively studied the long-term variation (1992-2017) in polar brightening observed with the Nobeyama Radioheliograph, the polar solar wind velocity with interplanetary scin…
Relationship Between Solar Wind Speed and Coronal Magnetic Field Properties
Ken'ichi Fujiki, Munetoshi Tokumaru, Tomoya Iju +2
We have studied the relationship between the solar-wind speed and the coronal magnetic-field properties (a flux expansion factor [] and photospheric magnetic-field strengt…
A Twenty Year Decline in Solar Photospheric Magnetic Fields: Inner-Heliospheric Signatures and Possible Implications?
P. Janardhan, Susanta Kumar Bisoi, S. Ananthakrishnan +4
We report observations of a steady 20 year decline of solar photospheric fields at latitudes 45 starting from 1995. This prolonged and continuing decline, combi…
Radial Speed Evolution of Interplanetary Coronal Mass Ejections During Solar Cycle 23
Tomoya Iju, Munetoshi Tokumaru, Ken'ichi Fujiki
We report radial speed evolution of interplanetary coronal mass ejections (ICMEs) detected by the SOHO/LASCO coronagraph, interplanetary scintillation (IPS) at 327 MHz, and in-situ…
Solar parameters for modeling interplanetary background
M. Bzowski, J. M. Sokol, M. Tokumaru +6
The goal of the Fully Online Datacenter of Ultraviolet Emissions (FONDUE) Working Team of the International Space Science Institute in Bern, Switzerland, was to establish a common…
Heliolatitude and time variations of solar wind structure from in situ measurements and interplanetary scintillation observations
J. M. Sokol, M. Bzowski, M. Tokumaru +2
The 3D structure of solar wind and its evolution in time is needed for heliospheric modeling and interpretation of energetic neutral atoms observations. We present a model to retri…
The Prelude to the Deep Minimum between Solar Cycles 23 and 24: Interplanetary Scintillation Signatures in the Inner Heliosphere
P. Janardhan, Susanta Kumar Bisoi, S. Ananthakrishnan +2
Extensive interplanetary scintillation (IPS) observations at 327 MHz obtained between 1983 and 2009 clearly show a steady and significant drop in the turbulence levels in the entir…
Is the Polar Region Different from the Quiet Region of the Sun?
Hiroaki Ito, Saku Tsuneta, Daikou Shiota +2
Observations of the polar region of the Sun are critically important for understanding the solar dynamo and the acceleration of solar wind. We carried out precise magnetic observat…