A5101434889- Solar and Space Plasma Dynamics
- Astro and Planetary Science
- Ionosphere and magnetosphere dynamics
- Geomagnetism and Paleomagnetism Studies
- Stellar, planetary, and galactic studies
- Metal-Organic Frameworks: Synthesis and Applications
- Solar Radiation and Photovoltaics
- Chemical Synthesis and Characterization
- Model Reduction and Neural Networks
- Hydraulic and Pneumatic Systems
- Radioactive element chemistry and processing
- Geophysics and Gravity Measurements
- Fault Detection and Control Systems
- Planetary Science and Exploration
- Advanced Sensor Technologies Research
- Meteorological Phenomena and Simulations
- Dynamics and Control of Mechanical Systems
- Membrane Separation and Gas Transport
- Laser-induced spectroscopy and plasma
- Atmospheric Ozone and Climate
- Nuclear Physics and Applications
- Technology and Data Analysis
- Real-time simulation and control systems
- Refrigeration and Air Conditioning Technologies
- Covalent Organic Framework Applications
Kyung Hee University
2011-2024
Chongqing University of Arts and Sciences
2016-2021
National Space Science Center
2016
Chinese Academy of Sciences
2016
ABSTRACT Solar magnetic activity varies with time in the two hemispheres different ways. The hemispheric interconnection of solar phenomena provides an important clue to understanding dynamical behavior dynamo actions. In this paper, several analysis approaches are proposed analyze systematic regularity asynchronism and amplitude asymmetry long-term sunspot areas during cycles 9–24. It is found that, (1) both prevalent behaviors not anomalous, but exhibits a much more regular than asymmetry;...
We study the stability and dynamics of a flux rope formed through emergence twisted magnetic tube into solar atmosphere. A three-dimensional magnetohydrodynamic simulation has been performed to investigate several key factors affecting rope. The is examined by deriving decay index coronal field surrounding transition between quasi-static dynamic states an analysis curvature scale height emerging field. practical application this for global eruptions also considered.
Abstract We study properties of intensity disturbances along polar coronal rays that are associated with plumes below. For this, we draw azimuth–time images extreme ultraviolet (EUV) emission 171 Å band observed by the SDO/AIA and white light (WL) SOHO/LASCO C2 in 2020 July. From image, define two tracks which EUV intensities were recurrently enhanced during weeks. The rooted at 78.°8 81.°4 latitudes, but their projected azimuth angles changed time as Sun rotates. Coherent WL different...
Empirical formulae for the real frequency and growth rate associated with whistler anisotropy instability are obtained. The electrons assumed to have an anisotropic distribution function, Maxwellian parallel distribution. Under such assumption complex roots of dispersion relation depend only on two dimensionless parameters, namely, temperature factor A = T⊥e/T∥e − 1, where T⊥e T∥e perpendicular electron temperatures, respectively, beta, β∥ (8πnT∥e/B2)1/2, n B plasma density magnetic field...
This paper reports a characteristic motion of polarity inversion line (PIL) formed at the solar surface, which is newly found by performing three-dimensional magnetohydrodynamic simulation flux emergence in Sun. A magnetic tube composed twisted field lines assumed to emerge below forming bipolar region with PIL surface. key finding successive half-turn rotation PIL, leading formation quadrupolar-like surface and configuration corona; this reminiscent of, but essentially different from...
<title>Abstract</title> We compared the adsorption performance of graphene and MOF-303 for three radionuclides significant concern in radioactive waste: Co, Sr, Cs, using density functional theory. Additionally, we doped with transition metals such as Cu, Ag, Au by replacing hydrogen atoms nitrogen linker, investigated resulting changes capability. The capability Cs was superior to graphene. Furthermore, doping further enhanced Cs. Ag-MOF-303 exhibited improvement Sr atom at specific sites....
Abstract An innovative solar observing satellite, Hinode, has successfully observed the detailed evolution of an emerging magnetic field, starting from its appearance at surface, to forming a developed bipolar region. The high spatial and temporal resolutions provided by satellite enabled us capture prominent dynamic phenomena caused such as running wave in chromospheric layer rotation polarity region on Sun, which is reminiscent cyclone Earth. A possible mechanism for producing spreading...
Abstract We examine two helmet and pseudo streamers (HSs PSs) observed on 2018 2019. The HSs (PSs) have dark coronal cavities stretched loop structures (twin narrow plasma sheet) at their bases, which are well in K-Coronagraph (K-Cor). Their outer-corona (top of core, cusp, stalk) also clearly identified LASCO-C2. By investigating LASCO-C2 images, we find the following characteristics. (1) Blobs persistently move outward along centers PSs as legs until base a stalk. detect outward-moving...