News is updated. (Feb. 2024)

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News (updated on 2024.2.27)

* Our second paper on Solar Atmospheric Heating (SAH) has been published in JKAS.

A comprehensive explanation is provided:

* We presented a method reminiscent of Solar Active Region Radiography (SARR) in PASJ.

* Lab. members (Jang Yeonwoo, Son Donghui) obtained their master degrees.

* A paper on Solar Atmospheric Heating (SAH) has been published in JKAS.

* Lab. members (Jang Yeonwoo, Son Donghui) won Best Poster Award in KAS & KSSS meetings.

* PI gave an invited talk on Modeling of solar magnetic phenomena: Past, present, and future at IAUGA 2022.

Movie version, PDF version

* PI gave a special seminar on Structure and dynamics of a solar prominence at the Univ. of Tokyo (hosted by Prof. S. Imada).

* A paper entitled Origins of the Flow and Magnetic Structure Involved in the Formation and Eruption of a Solar Prominence has been published in JKAS.

A multi-panel movie is here.

* We have set up a work team (PI + one research professor + one postdoctoral researcher + one graduate student) to conduct a new NRF project on SAH and SARR.

* A new member (Son Donghui) joined our laboratory.

* A book entitled Variations of the Sun's Large-Scale Magnetic Field over Solar Cycles 21 – 24 is available online.

* A paper entitled Aggregation Characteristics of the Sun's Large-Scale Magnetic Field Associated with a Global Magnetic Anomaly in the Last Extended Solar Cycle has been published in Solar Physics.

* PI's proposal for the medium-scale NRF program has been selected.

* A laboratory member (An Junmo) passed a selection process of his NRF proposal for Basic Research Program.

* A new member (Jang Yeonwoo) joined our laboratory.

* A laboratory member (Lee Hwanhee) got a position at Space Science Division in KASI.

* A laboratory member (Lee Hwanhee) passed a selection process of her NRF proposal for Young Researcher Program.

* A laboratory member (An Junmo) obtained a doctoral degree in physics from Kyung Hee University (경희대학교; 慶熙大学校). The title of his Ph.D. thesis is MHD Simulation Studies of Solar Flux Ropes with Dynamic State Transition and Their Propagation in the Interplanetary Space.

* PI was invited to give a talk at KGU2019.

* PI was invited to give a talk at AAPPS2018. (PDF file)

* A laboratory member (Lee Hwanhee) obtained a doctoral degree in physics from Kyung Hee University (경희대학교; 慶熙大学校). The title of her Ph.D. thesis is An MHD Simulation Study of Solar Coronal Dynamics with Solar Winds and Solar Eruptions.

* PI was invited to give a talk at APSPM4. (PDF file)

* A laboratory member (Kang Jihye) passed a selection process of her NRF proposal for Young Researcher Program.

* A laboratory member (Kang Jihye) obtained a doctoral degree in physics from Kyung Hee University (경희대학교; 慶熙大学校). The title of her Ph.D. thesis is Investigation into Force-Freeness of a Solar Active Region and Application of Force-Free Models to a Flare-Producing Active Region.

* PI was invited to give a seminar at Northumbria University. (PDF file)

* Laboratory members (An Jun Mo, Lee Hwanhee, Kang Jihye, Park Daeshin) won silver medals in the 6th Summer School Contest of Parallel Computation held at KIAS Center for Advanced Computation.

Topics

* Evolution of a solar magnetic field (from emergence to eruption) (pdf file)

* Solar flare-producing electric current system (comparison to circulatory blood system in a body) (pdf file)

* What are solar active regions? How much variety is there in them and how are they characterized? (pdf file)

* What is a solar prominence? How is it produced and how does it evolve toward its global eruption? (pdf file)

Selected publications

* Merging and Fragmentation in the Solar Active Region 10930 Caused by an Emerging Magnetic Flux Tube with Asymmetric Field-Line Twist Distribution along Its Axis (Magara Tetusya, JKAS, 52, 89)

movie1, movie2, movie3

* Parametric Study of ICME Properties Related to Space Weather Disturbances via a Series of Three-Dimensional MHD Simulations (An Junmo, Magara Tetusya, Hayashi Keiji, & Moon Yong-Jae, Sol. Phys., 294, 143)

* MHD Simulation for Investigating the Dynamic State Transition Responsible for a Solar Eruption in Active Region 12158 (Lee Hwanhee & Magara Tetusya, ApJ, 859, 132)

* An Inversion Method for Deriving Physical Properties of a Subsurface Magnetic Field from Surface Magnetic Field Evolution I. Application to Simulated Data (Magara Tetusya, JKAS, 50, 179)

* Structural Properties of the Solar Flare-producing Coronal Current System Developed in an Emerging Magnetic Flux Tube (Magara Tetusya, PASJ, 69, 5)

Selected as the front cover of the PASJ, vol. 69, No. 1
figure 1, figure 2, figure 3, figure 4, figure 5, figure 6

* Distribution Characteristics of Coronal Electric Current Density as an Indicator for the Occurrence of a Solar Flare (Kang Jihye, Magara Tetusya, Inoue Satoshi, Kubo Yuki, & Nishizuka Naoto, PASJ, 68, 101)

* MHD Simulation for Investigating the Evolutionary Path of a Solar Magnetic Field That Emerges, Structures Itself, Erupts, and Produces a Flare (Magara Tetusya, PASJ, 67, L6)

* Evolution & Dynamics of a Solar Active Prominence (Magara Tetusya, PASJ, 67, L5)

* Investigation of Force-freeness of a Solar Emerging Magnetic Field via Application of the Virial Theorem to MHD Simulations (Kang Jihye & Magara Tetusya, PASJ, 66, 121)

* Scaling Laws of Free Magnetic Energy Stored in a Solar Emerging Flux Region (Magara, T., PASJ, 66, L6)

* Magnetic Configurations Related to the Coronal Heating and Solar Wind Generation I. Twist and Expansion Profiles of Magnetic Loops Produced by Flux Emergence (Lee Hwanhee & Magara Tetsuya, PASJ, 66, 39)

Selected as the front cover of the PASJ, vol. 66, No. 2

* Stability and Dynamics of a Flux Rope Formed via Flux Emergence into the Solar Atmosphere (An, J. M. & Magara, T., ApJ, 773, 21)

* κH-Mechanism of a Solar Eruption Produced Self-Consistently by Flux Emergence (Magara, T., PASJ, 65, L5)

* Solar Flares: Magnetohydrodynamic Processes (Shibata, K. & Magara, T., Living Reviews in Solar Physics series) is now available online.

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