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相关论文: Identifying Flux Rope Signatures Using a Deep Neur…

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The Flux Rope in 3D (FRi3D, Isavnin, 2016), a coronal mass ejection (CME) model with global three-dimensional (3D) geometry, has been implemented in the space weather forecasting tool EUHFORIA (Pomoell and Poedts, 2018). By incorporating…

Fast radio bursts (FRBs) are bright radio transients of micro-to-millisecond duration and unknown extragalactic origin. Central to the mystery of FRBs are their extremely high characteristic energies, which surpass the typical energies of…

Interplanetary coronal mass ejections (ICMEs) are defined as ''coherent'' if they are capable of responding to external perturbations in a collective manner. This implies that information must be able to propagate across ICME structures,…

太阳与恒星天体物理 · 物理学 2023-12-08 Camilla Scolini , Noe Lugaz , Reka M. Winslow , Charles J. Farrugia , Norbert Magyar , Fabio Bacchini

Coronal mass ejections (CMEs) are the eruptions of magnetised plasma from the Sun and are considered the main driver of adverse space weather events. Hence, undrstanding its formation process, particularly the magnetic topology, is critical…

太阳与恒星天体物理 · 物理学 2025-02-26 Jinhan Guo , Y. W. Ni , B. Schmieder , Y. Guo , C. Xia , P. Devi , R. Chandra , S. Poedts , R. Joshi , Y. H. Zhou , H. T. Li , P. F. Chen

Authors: Yifan Xu Abstract: Conventional wind power prediction methods often struggle to provide accurate and reliable predictions in the presence of sudden changes in wind speed and power output. To address this challenge, this study…

机器学习 · 计算机科学 2025-02-19 Yifan Xu

The twisted local magnetic field at the front or rear regions of the magnetic clouds (MCs) associated with interplanetary coronal mass ejections (ICMEs) is often nearly opposite to the direction of the ambient interplanetary magnetic field…

Magnetic clouds (MCs) are twisted magnetic structures ejected from the Sun and probed by in situ instruments. They are typically modeled as flux ropes (FRs). The determination of the FR global characteristics requires the estimation of the…

太阳与恒星天体物理 · 物理学 2018-11-21 Pascal Démoulin , Sergio Dasso , Miho Janvier

Coronal mass ejections (CMEs) are intense solar explosive eruptions. CMEs are highly important players in solar-terrestrial relationships, and they have important consequences for major geomagnetic storms and energetic particle events. It…

空间物理 · 物理学 2019-02-20 Hengqiang Feng , Yan Zhao , Guoqing Zhao , Qiang Liu , Dejin Wu

Magnetic Clouds (MCs) are a particular subset of Interplanetary Coronal Mass Ejections (ICMEs), forming large scale magnetic flux ropes. In this work we analyze the evolution of a particular MC (observed on March 1998) using {\it in situ}…

太阳与恒星天体物理 · 物理学 2015-05-30 M. S. Nakwacki , S. Dasso , P. Démoulin , C. H. Mandrini , A. M. Gulisano

Coronal mass ejections (CMEs) are one of the primary manifestations of solar activity and can drive severe space weather effects. Therefore, it is vital to work towards being able to predict their occurrence. However, many aspects of CME…

太阳与恒星天体物理 · 物理学 2017-05-24 A. W. James , L. M. Green , E. Palmerio , G. Valori , H. A. S. Reid , D. Baker , D. H. Brooks , L. van Driel-Gesztelyi , E. K. J. Kilpua

The aim of this paper is to demonstrate the possible use of the new coronal model COCONUT to compute a detailed representation of a numerical CME at 0.1~AU, after its injection at the solar surface and propagation in a realistic solar wind,…

太阳与恒星天体物理 · 物理学 2023-07-12 L. Linan , F. Regnault , B. Perri , M. Brchnelova , B. Kuzma , A. Lani , S. Poedts , B. Schmieder

We report small-scale magnetic flux ropes via the Parker Solar Probe in situ measurements during the first six encounters and present additional analyses to supplement our prior work in Chen et al. 2021. These flux ropes are detected by the…

空间物理 · 物理学 2022-01-19 Yu Chen , Qiang Hu

A deep neural network is developed and trained on magnetic measurements (input) and EFIT poloidal magnetic flux (output) on the EAST tokamak. In optimizing the network architecture, we use automatic optimization in searching for the best…

等离子体物理 · 物理学 2023-09-07 Jingjing Lu , Youjun Hu , Nong Xiang , Youwen Sun

Dynamic networks are interconnected dynamic systems with measured node signals and dynamic modules reflecting the links between the nodes. We address the problem of \red{identifying a dynamic network with known topology, on the basis of…

系统与控制 · 计算机科学 2018-10-02 Harm H. M. Weerts , Paul M. J. Van den Hof , Arne G. Dankers

This paper explores whether graph embedding methods can be used as a tool for analysing the robustness of power-grids within the framework of network science. The paper focuses on the strain elevation tension spring embedding (SETSe)…

系统与控制 · 电气工程与系统科学 2021-05-28 Jonathan Bourne

Interplanetary coronal mass ejections (ICMEs) are the interplanetary manifestations of solar eruptions. The overtaken solar wind forms a sheath of compressed plasma at the front of ICMEs. Magnetic clouds (MCs) are a subset of ICMEs with…

太阳与恒星天体物理 · 物理学 2016-08-10 J. J. Masías-Meza , S. Dasso , P. Démoulin , L. Rodriguez , M. Janvier

The large-scale magnetic structure of interplanetary coronal mass ejections (ICMEs) has been shown to cause decreases in the galactic cosmic ray (GCR) flux measured in situ by spacecraft, known as Forbush decreases (Fds). We use…

空间物理 · 物理学 2023-02-08 Emma E. Davies , Réka M. Winslow , David J. Lawrence

The kinetic features of secondary magnetic reconnection in a single flux rope undergoing internal kink instability are studied by means of three-dimensional Particle-in-Cell simulations. Several signatures of secondary magnetic reconnection…

等离子体物理 · 物理学 2015-06-22 S. Markidis , G. Lapenta , G. L. Delzanno , P. Henri , M. V. Goldman , D. L. Newman , T. Intrator , E. Laure

Interplanetary Coronal Mass Ejections (ICMEs) are the primary sources of geomagnetic storms at Earth. Negative out-of-ecliptic component (Bz) of magnetic field in the ICME or its associated sheath region is necessary for it to be…

太阳与恒星天体物理 · 物理学 2025-02-04 Talwinder Singh , Dinesha V. Hegde , Tae K. Kim , Nikolai V. Pogorelov

Decades of in-situ solar wind measurements have clearly established the variation of solar wind physical parameters. These variable parameters have been used to classify the solar wind magnetized plasma into different types leading to…

太阳与恒星天体物理 · 物理学 2024-09-17 Tom Narock , Sanchita Pal , Aryana Arsham , Ayris Narock , Teresa Nieves-Chinchilla