Liping Yang

Data Coverage Dependence of Interplanetary Scintillation Tomography: Insights from Carrington Rotation 2075

Ming Xiang Xiong, Yanchen Gao, Xueshang Feng, Huichao Li et autres

Abstract Interplanetary scintillation (IPS) tomography is a key technique for probing the three-dimensional structures of the inner heliosphere and for space weather forecasting. In this paper, we quantify how the performance of an IPS-driven magnetohydrodynamic computer-assisted tomography model depends on the coverage …

cn (code pays fourni par la source)

A Nonspherical Source Surface Model for the Solar Coronal Magnetic Field

Ziqi Wu, Jiansen He, Chuanpeng Hou, Tom Van Doorsselaere et autres

Abstract The coronal magnetic field plays a fundamental role in governing coronal activity, driving space weather events, and shaping the heliosphere. Due to a lack of direct observations, extrapolation models such as the potential field source surface (PFSS) model become the primary …

cn, be, de, au, gb (code pays fourni par la source)

Modeling of Coronal Mass Ejection Originating from a Sheared Arcade of Realistic Active-region Scale and Its Propagation in the Heliosphere: Methodology

Chaowei Jiang, Xueshang Feng, Liping Yang, Huichao Li et autres

Abstract Simulating coronal mass ejections (CMEs) from their origin in active regions (ARs) to their propagation to Earth remains challenging, particularly when aiming to resolve AR scales and employ realistic magnetic field strengths without compromising computational efficiency. Here we present a methodology …

cn, be (code pays fourni par la source)

Lateral Deformation of Large-scale Coronal Mass Ejections during the Transition from Nonradial to Radial Propagation

Huidong Hu, Yiming Jiao, Bei Zhu, Xiaowei Zhao et autres

Abstract Many coronal mass ejections (CMEs) initially propagate nonradially, and then transition to radial propagation in the corona. This directional transition is a significant process that determines a CME’s space weather effects but remains poorly understood. Based on multiwavelength observations, we investigate …

Lateral Deformation of Large-scale Coronal Mass Ejections during the Transition from Non-radial to Radial Propagation

Huidong Hu, Chong Chen, Yiming Jiao, Bei Zhu et autres

Many coronal mass ejections (CMEs) initially propagate non-radially, and then transition to radial propagation in the corona. This directional transition is a significant process that determines a CME's space weather effects but remains poorly understood. Based on multi-wavelength observations, we investigate the …

cn, us (code pays fourni par la source)

SIP-IFVM: An Observation-based Magnetohydrodynamic Model of a Coronal Mass Ejection

Haopeng Wang, Jinhan Guo, Stefaan Poedts, Andrea Lani et autres

Abstract Currently, achieving a balance between computational efficiency, accuracy, and numerical stability in coronal mass ejection (CME) simulations, particularly in the sub-Alfvénic coronal region, remains a significant challenge. This paper aims to address the challenge by integrating observational data and developing advanced …

be, cn, pl, kr, us, fr (code pays fourni par la source)

Backmapping of the High- and Low-latitude Solar Wind under Multiple Heliospheric and Coronal Magnetic Field Configurations

Xinyi Ma, Liping Yang, Xueshang Feng, Hui Tian et autres

Abstract Solar wind backmapping is a critical technique for analyzing the origin of the solar wind and space weather events by correlating in situ measurements with solar remote-sensing observations. This technique typically traces magnetic field lines using a heliospheric magnetic field (HMF) …

Observational Study of Chromospheric Jets In and Around a Sunspot Observed by NVST and SDO

G. J. Wu, Xiaoli Yan, Zhike Xue, Jincheng Wang et autres

Abstract To better understand the characteristics, driving mechanisms, and potential heating contributions of chromospheric jets, we analyze two contrasting types: one originating from within the sunspot penumbra (inside jets) and the other originating from outside the penumbra (outside jets). Statistical analysis of …

cn (code pays fourni par la source)

MMS Observations of an Active Flux Rope During Asymmetric Magnetic Reconnection

Chaoxu Liu, Xueshang Feng, Fang Shen, Xinhua Zhao et autres

Abstract Within the magnetopause reconnection layer, a magnetic flux rope shows a stepped ascent in its core magnetic field. Gradients within this core field are analyzed at Magnetospheric Multiscale tetrahedron scales. We employ kinetic particle‐in‐cell (PIC) simulations to explore the formation of …

cn (code pays fourni par la source)

Backmapping of the High- and Low-latitude Solar Wind under Multiple Heliospheric and Coronal Magnetic Field Configurations

Xinyi Ma, Liping Yang, Xueshang Feng, Hui Tian et autres

Solar wind backmapping is a critical technique for analyzing the origin of the solar wind and space weather events by correlating in situ measurements with solar remote-sensing observations. This technique typically traces magnetic field lines using a heliospheric magnetic field (HMF) model …

A 2D Fourth-Order CESE Scheme for Solving the Ideal MHD Equations

Yufen Zhou, Xueshang Feng, Fang Shen, Liping Yang et autres

We construct a two-dimensional fourth-order space-time conservation element and solution element (CESE) schemes for solving the ideal magnetohydrodynamics (MHD) equations. In the CESE scheme, the flow variables are calculated by using the same procedure as that of the original second-order CESE scheme. …

cn (code pays fourni par la source)

Inertial-range Turbulence Anisotropy of the Young Solar Wind from Different Source Regions

Wenshuai Cheng, Ming Xiang Xiong, Yiming Jiao, Hao Ran et autres

Abstract We investigate the wavevector and variance anisotropies in the inertial range of the young solar wind observed by the Parker Solar Probe (PSP). Using the first 19 encounters of PSP measurements, we identify the young solar wind from different source regions: …