A5002437982- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Astro and Planetary Science
- Stellar, planetary, and galactic studies
- Geomagnetism and Paleomagnetism Studies
- Solar Radiation and Photovoltaics
- Astrophysics and Star Formation Studies
- Advanced Thermodynamics and Statistical Mechanics
- Solar Thermal and Photovoltaic Systems
- Geophysics and Gravity Measurements
- Photoacoustic and Ultrasonic Imaging
- Superconducting Materials and Applications
- Magnetic Bearings and Levitation Dynamics
- Atmospheric Ozone and Climate
- Conservation Techniques and Studies
- Cultural Heritage Management and Preservation
- CCD and CMOS Imaging Sensors
- Medical Imaging and Analysis
- Nanoplatforms for cancer theranostics
- Electric Motor Design and Analysis
- Complex Systems and Time Series Analysis
- Listeria monocytogenes in Food Safety
- Spinal Fractures and Fixation Techniques
- 3D Surveying and Cultural Heritage
- Market Dynamics and Volatility
Nanjing University
2020-2024
KU Leuven
2023-2024
Beijing University of Chinese Medicine
2024
Belarusian State University
2023
Southern University of Science and Technology
2023
University of Science and Technology of China
2022
Purple Mountain Observatory
2020-2022
Chinese Academy of Sciences
2022
Shanghai Jiao Tong University
2009
Abstract Magnetic flux ropes are a bundle of twisted magnetic field lines produced by internal electric currents, which responsible for solar eruptions and the major drivers geomagnetic storms. As such, it is crucial to develop numerical model that can capture entire evolution rope, from its birth death, in order predict whether adverse space weather events might occur or not. In this paper, we data-driven modeling combines time-dependent magnetofrictional approach with thermodynamic...
Abstract Solar filament eruptions, flares, and coronal mass ejections (CMEs) are manifestations of drastic releases energy in the magnetic field, which related to many eruptive phenomena, from Earth’s magnetosphere black hole accretion disks. With availability high-resolution magnetograms on solar surface, observational data-based modeling is a promising way quantitatively study underlying physical mechanisms behind observations. By incorporating thermal conduction radiation losses equation,...
Abstract Solar filaments are believed to be a clump of cold plasma accumulated in the magnetic dips. However, configuration and key factors for their formation remains elusive. In this Letter, we present detailed study eruption multifilament system with observations simulations. Before filament appeared visible, chromospheric fibrils gradually gathered together, evolving from diffuse distribution into threadlike structures that were nearly parallel polarity inversion lines. On 2022 March 20,...
It is accepted that magnetic flux ropes might exhibit large-angle rotation in configurations, including strong external toroidal fields. The specific mechanisms leading to still remain elusive, however. We examine the by which field facilitates flux-rope rotation, and we explore potential alternative beyond effects of sheared fields kink instability. performed three-dimensional magnetohydrodynamic simulations model eruption a configuration with without compared morphology, dynamics,...
Time-evolving magnetohydrodynamic (MHD) coronal modeling, driven by a series of time-dependent photospheric magnetograms, represents new generation simulations. This approach offers greater realism compared to traditional models constrained static magnetogram. However, its practical application is seriously limited low computational efficiency and poor numerical stability. Therefore, we propose an extended magnetic field decomposition strategy implement it in the implicit MHD model develop...
In  standard  2D eruption models, the of a magnetic flux rope is associated with reconnection occurring beneath it. However, in 3D context, additional possibilities arise, particularly involving interactions between and overlying arcades. This process results drifting legs erupting rope.We show examples such reconnections filaments interacting coronal arcades, called ar-rf (arcade + – flare loop), using AIA/SDO IRIS data.To understand physical processes behind...
Predicting the geo-effectiveness of CMEs relies on accurate modeling their propagation and interaction with solar wind. EUHFORIA (EUropean Heliospheric FORecasting Information Asset) is a state-of-the-art 3D magnetohydrodynamic (MHD) model designed to evolution in heliosphere. I will present several advanced CME models implemented EUHFORIA, including spheromak model, Fri3D (Flux-Rope 3D), spheromak, two toroidal (Soloviev Miller-Turner based models). Additionally, more recent deep...
Coronal mass ejections (CME) are one of the main drivers space weather. However, quasi-realistic and efficient numerical modelling CME propagation evolution process in whole solar-terrestrial space, especially sub-Alfvénic corona, is still lacking. Recently, we have made some attempts to improve our ability model CMEs. 1. We developed an time-evolving MHD coronal which can be used provide inner-boundary conditions for inner heliosphere models practical weather forecasting. ...
Spiral jets are impulsive plasma ejections that typically show an apparent rotational motion. Their generation, however, is still not understood thoroughly. Based on a high-resolution vector magnetogram from the Polarimetric and Helioseismic Imager board Solar Orbiter, we constructed data-constrained three-dimensional (3D) magnetohydrodynamics (MHD) model, aiming to disclose eruption mechanism of tiny spiral jet at moss region observed March 3, 2022. The initial configuration simulation...
Abstract The buildup of the preeruptive magnetic field configuration and eruption onset mechanism are critical yet poorly understood in solar eruptions. Coronal structures like sigmoids filaments have been identified as structures; their associated preflare motions well brightenings precursor signatures, none these definitively lead to eruptions, cause effect is contentious. Most importantly, how coronal structure evolves with photospheric elusive. Here we report development nonneutralized...
Abstract Solar filaments often exhibit rotation and deflection during eruptions, which would significantly affect the geoeffectiveness of corresponding coronal mass ejections (CMEs). Therefore, understanding mechanisms that lead to such lateral displacement is a great concern space weather forecasting. In this paper, we examine an intriguing filament eruption event observed by Chinese H α Explorer Dynamics Observatory. The filament, eventually evolves into CME, exhibits significant drifting...
Abstract We perform a data-constrained simulation with the zero- β assumption to study mechanisms of strong rotation and failed eruption filament in active region 11474 on 2012 May 5 observed by Solar Dynamics Observatory Terrestrial Relations Observatory. The initial magnetic field is provided nonlinear force-free extrapolation, which reconstructed regularized Biot–Savart laws magnetofrictional method. Our reproduces most observational features very well, e.g., large-angle about 130°,...
Abstract Solar filaments are cold and dense materials situated in magnetic dips, which show distinct radiation characteristics compared to the surrounding coronal plasma. They associated with sheared twisted field lines. However, exact configuration supporting a filament material is not easy ascertain because of absence routine observations inside filaments. Since many lie above weak-field regions, it nearly impossible extrapolate their structures by applying traditional methods noisy...
ABSTRACT In this study, one multiplex polymerase chain reaction (MPCR) assay was developed for simultaneous detection of four foodborne pathogens, i.e., Listeria monocytogenes, Staphylococcus aureus, Salmonella enterica and Escherichia coli O157:H7. Five specific primer pairs were designed based on the nucleotide sequences hemolysin gene (hly) thermostable nuclease (nuc) invasion (invA) enterica, shiga‐like toxin (stx) intimin (eae) O157:H7 in assay. The specificity sensitivity MPCR method...
Many prominences are supported by magnetic flux ropes. One important question is how we can determine whether the rope weakly-twisted or strongly-twisted. In this paper, attempted to check and strongly-twisted ropes manifest different features so that might distinguish two types of structures their appearance. We performed pseudo three-dimensional simulations with twists. found resulting differ in many aspects. The prominence a composed mainly transient threads, forming high-speed flows...
Context . Three-dimensional (3D) reconnection is an important mechanism for efficiently releasing energy during astrophysical eruptive events, which difficult to be quantitatively analyzed especially within turbulent plasmas. Aims In this paper, efficient method identifying locations and configurations of 3D from magnetohydrodynamical (MHD) data developed. Methods This analyzes the local nonideal electric field magnetic structure at arbitrary position. As only performing algebraical...
In this paper, we report the multiwavelength observations of a very long filament in active region (AR) 11112 on 2010 October 18. The was composed two parts, eastern part (EP) and western (WP). We focus longitudinal oscillations EP, which were enhanced by homologous C-class flares same AR. C1.3 flare confined without CME. Both EP WP slightly disturbed survived flare. After 5 hrs, eruption generated C2.6 narrow, jet-like Three oscillating threads (thd$_a$, thd$_b$, thd$_c$) are obviously...
Abstract Solar eruptive activities could occur in weak magnetic field environments and over large spatial scales, which are especially relevant to eruptions involving intermediate or quiescent solar filaments. To handle the we implement apply a flux rope embedding method using regularized Biot–Savart laws spherical coordinate system. Combined with potential source surface model magneto-frictional method, nonlinear force-free comprising embedded is constructed. Using combined as initial...
Context: As a ubiquitous phenomenon, large-amplitude longitudinal filament oscillations usually decay in 1--4 periods. Recently, we observed decayless case of such the corona. Aims: We try to understand physical process that maintains oscillation filament. Methods: Multi-wavelength imaging observations and magnetograms are collected study dynamics its associated phenomena. To explain oscillations, also perform one-dimensional hydrodynamic numerical simulations using MPI-AMRVAC code. Results:...
Introduction Capital plays a crucial role in the development of regional economies, especially low-income regions where it acts as primary driver economic growth. Efficient capital flow is essential for optimizing resource allocation and facilitating integrated markets. This passage introduces topic capital, flow, market integration highlights their significance development. Methods To gain comprehensive understanding Yangtze River Delta region, researchers conducted connotative analysis....
Abstract We present imaging and spectroscopic diagnostics of a long filament during its formation with the observations from Chinese H α Solar Explorer Dynamics Observatory. The seed first appeared at about 05:00 UT on 2022 September 13. Afterward, it grew gradually connected to another segment nearby, building up 20:00 same day. CHASE spectra show an obvious centroid absorption mild broadening main spine filament, which is interpreted as evidence material accumulation. More interestingly,...
Filament channel (FC), a plasma volume where the magnetic field is primarily aligned with polarity inversion line, believed to be pre-eruptive configuration of coronal mass ejections. Nevertheless, evidence for how FC formed still elusive. In this paper, we present detailed study on build-up understand its formation mechanism. The New Vacuum Solar Telescope Yunnan Observatories and Optical Near-Infrared Eruption Tracer Nanjing University, as well AIA HMI board Dynamics Observatory are used...
Coronal mass ejections (CMEs) stand as intense eruptions of magnetized plasma from the Sun, playing a pivotal role in driving significant changes heliospheric environment. Deducing properties CMEs their progenitors solar source regions is crucial for space weather forecasting. The primary objective this paper to establish connection between and regions, enabling us infer magnetic structures before full development. To end, we create dataset comprising flux rope series with varying projection...
Abstract The periodic coronal rain and in-phase radiative intensity pulsations have been observed in multiple wavelengths recent years. However, due to the lack of three-dimensional magnetic fields thermodynamic data observations, it remains challenging quantify heating rate that drives mass cycles. In this work, based on MURaM code, we conduct a magnetohydrodynamic simulation spanning from convective zone corona, where solar atmosphere is heated self-consistently through dissipation...
Context. Coronal mass ejections (CMEs) are rapid eruptions of magnetized plasma that occur on the Sun. They known to be main drivers adverse space weather. The accurate tracking their evolution in heliosphere numerical models is utmost importance for weather forecasting. Aims. objective this paper implement regularized Biot-Savart law (RBSL) method a new global corona model, called COCONUT. This approach has capability construct magnetic flux rope with an axis arbitrary shape. Methods. We...