214 citations · 710 across the 17 of their papers we have counts for
17 papers
A Data-constrained Magnetohydrodynamic Simulation of the X1.0 Solar Flare of 2021 October 28
Daiki Yamasaki, Satoshi Inoue, Yumi Bamba +2
The solar active region NOAA 12887 produced a strong X1.0 flare on 2021 October 28, which exhibits X-shaped flare ribbons and a circle-shaped erupting filament. To understand the e…
An MHD Modeling of Successive X2.2 and X9.3 Solar Flares of 2017 September 6
Satoshi Inoue, Yumi Bamba
Solar active region 12673 produced two successive X-class flares (X2.2 and X9.3) approximately 3 hours apart in September 2017. The X9.3 was the recorded largest solar flare in Sol…
Intrusion of Magnetic Peninsula toward the Neighboring Opposite-polarity Region That Triggers the Largest Solar Flare in Solar Cycle 24
Yumi Bamba, Satoshi Inoue, Shinsuke Imada
The largest X9.3 solar flare in solar cycle 24 and the preceding X2.2 flare occurred on September 6, 2017, in the solar active region NOAA 12673. This study aims to understand the…
The Role of a Tiny Brightening in a Huge Geo-effective Solar Eruption Leading to the St Patrick's Day Storm
Yumi Bamba, Satoshi Inoue, Keiji Hayashi
The largest magnetic storm in solar cycle 24 was caused by a fast coronal mass ejection (CME) that was related to a small C9.1 flare that occurred on 15 March 2015 in solar active…
Magnetohydrodynamic Modeling of a Solar Eruption Associated with X9.3 Flare Observed in Active Region 12673
Satoshi Inoue, Daikou Shiota, Yumi Bamba +1
On SOL2017-09-06 solar active region 12673 produced an X9.3 flare which is regarded as largest to occur in solar cycle 24. In this work we have preformed a magnetohydrodynamic (MHD…
A Study of Magnetic Field Characteristics of Flaring Active Region Based on Nonlinear Force-free Field Extrapolation
Johan Muhamad, Kanya Kusano, Satoshi Inoue +1
Coronal magnetic fields are responsible for the onset of solar flares and solar eruptions. However, the type of magnetic field parameters that can be used to measure the critical c…
Evaluation of Applicability of a Flare Trigger Model based on Comparison of Geometric Structures
Yumi Bamba, Kanya Kusano
The triggering mechanism(s) and critical condition(s) of solar flares are still not completely clarified, although various studies have attempted to elucidate them. We have also pr…
Study on Precursor Activity of the X1.6 Flare in the Great AR 12192 with SDO, IRIS, and Hinode
Y. Bamba, K. S. Lee, S. Imada +1
The physical properties and its contribution to the onset of solar flare are still unclear although chromospheric brightening is considered a precursor phenomenon of flare. Many st…
Triggering Process of the X1.0 Three-ribbon Flare in the Great Active Region NOAA 12192
Yumi Bamba, Satoshi Inoue, Kanya Kusano +1
The solar magnetic field in a flare-producing active region (AR) is much more complicated than theoretical models, which assume a very simple magnetic field structure. The X1.0 fla…
IRIS, Hinode, SDO, and RHESSI observations of a white light flare produced directly by non-thermal electrons
Kyoung-Sun Lee, Shinsuke Imada, Kyoko Watanabe +2
An X1.6 flare occurred in AR 12192 on 2014 October 22 at 14:02 UT and was observed by Hinode, IRIS, SDO, and RHESSI. We analyze a bright kernel which produces a white light (WL) fl…
Coronal Behavior Before the Large Flare Onset
Shinsuke Imada, Yumi Bamba, Kanya Kusano
Flares are a major explosive event in our solar system. They are often followed by coronal mass ejection that has a potential to trigger the geomagnetic storms. There are various s…
Comparison between Hinode/SOT and SDO/HMI, AIA Data for the Study of the Solar Flare Trigger Process
Yumi Bamba, Kanya Kusano, Shinsuke Imada +1
To elucidate the flare trigger mechanism, we have analyzed several flare events which were observed by Hinode/Solar Optical Telescope (SOT), in our previous study. Because of the l…
High speed photospheric material flow observed at the polarity inversion line of a delta-type sunspot producing an X5.4 flare on 7 March 2012
Toshifumi Shimizu, Bruce W. Lites, Yumi Bamba
Solar flares abruptly release the free energy stored as a non-potential magnetic field in the corona and may be accompanied by eruptions of the coronal plasma. Formation of a non-p…
Formation of a Flare-Productive Active Region: Observation and Numerical Simulation of NOAA AR 11158
S. Toriumi, Y. Iida, K. Kusano +2
We present a comparison of the Solar Dynamics Observatory (SDO) analysis of NOAA Active Region (AR) 11158 and numerical simulations of flux-tube emergence, aiming to investigate th…
Study on Triggering Process of Solar Flares Based on Hinode/SOT Observations
Y. Bamba, K. Kusano, T. T. Yamamoto +1
We investigated four major solar flare events that occurred in active regions NOAA 10930 (December 13 and 14, 2006) and NOAA 11158 (February 13 and 15, 2011) by using data observed…
Magnetic Systems Triggering the M6.6-class Solar Flare in NOAA Active Region 11158
Shin Toriumi, Yusuke Iida, Yumi Bamba +3
We report a detailed event analysis on the M6.6-class flare in the active region (AR) NOAA 11158 on 2011 February 13. AR 11158, which consisted of two major emerging bipoles, showe…
Magnetic Field Structures Triggering Solar Flares and Coronal Mass Ejections
K. Kusano, Y. Bamba, T. T. Yamamoto +3
Solar flares and coronal mass ejections (CMEs), the most catastrophic eruptions in our solar system, have been known to affect terrestrial environments and infrastructure. However,…