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Understanding and forecasting the geoeffectiveness of a coronal mass ejection (CME) is crucial for protecting infrastructure in the near-Earth space environment and on Earth. In this study, we present a novel fusion model to forecast the…

太阳与恒星天体物理 · 物理学 2026-05-26 Zhaoxin Yan , Jason T. L. Wang , Haimin Wang , Harim Lee , Ju Jing , Yan Xu , Chunhui Xu , Vasyl Yurchyshyn

The magnetic flux rope (MFR) is believed to be the underlying magnetic structure of coronal mass ejections (CMEs). However, it remains unclear how an MFR evolves into and forms the multi-component structure of a CME. In this paper, we…

太阳与恒星天体物理 · 物理学 2015-06-17 X. Cheng , M. D. Ding , Y. Guo , J. Zhang , A. Vourlidas , Y. D. Liu , O. Olmedo , J. Q. Sun , C. Li

We present a comprehensive characterization of 26 CME-driven compressive waves known as Coronal Bright Fronts (CBFs) observed in the low solar corona between 2010 and 2017. These CBFs have been found to be associated with SEP events near…

太阳与恒星天体物理 · 物理学 2024-04-05 Mohamed Nedal , Kamen Kozarev , Rositsa Miteva , Oleg Stepanyuk , Momchil Dechev

We present an investigation of the rotation and non-radial motion of a coronal mass ejection (CME) from AR 12468 on 2015 December 16 using observations from SDO, SOHO, STEREO A and Wind. The EUV and HMI observations of the source region…

太阳与恒星天体物理 · 物理学 2018-02-28 Yi A. Liu , Ying D. Liu , Huidong Hu , Rui Wang , Xiaowei Zhao

Multi-instrument data sets of NOAA AR10938 on Jan. 16, 2007, (e.g., {\emph{Hinode}}, {\it{STEREO}}, {\it{GOES}}, {\it{MLSO}} and {\it{ISOON}} H$\alpha$) are utilized to study the fine structure and evolution of a magnetic loop system…

太阳与恒星天体物理 · 物理学 2009-11-13 N. -E. Raouafi

This study investigates the impact of spacecraft positioning and trajectory on in situ signatures of coronal mass ejections (CMEs). Employing the 3DCORE model, a 3D flux rope model that can generate in situ profiles for any given point in…

Solar flares and coronal mass ejections (CMEs) can accelerate electrons, causing bursts such as type IV emissions in the solar radio continuum. Although radio spectroscopy is a powerful diagnostic tool for the corona, the origin and…

太阳与恒星天体物理 · 物理学 2025-09-03 Edin Husidic , Nicolas Wijsen , Immanuel Christopher Jebaraj , Angelos Vourlidas , Luis Linan , Rami Vainio , Stefaan Poedts

Coronal extreme-ultraviolet (EUV) waves are large-scale disturbances propagating in the corona, whose physical nature and origin have been discussed for decades. We report the first three dimensional (3D) radiative magneto-hydrodynamic…

太阳与恒星天体物理 · 物理学 2021-04-21 Can Wang , Feng Chen , Mingde Ding

We present an analysis of the formation of atmospheric flux ropes in a magnetohydrodynamic (MHD) solar flux emergence simulation. The simulation domain ranges from the top of the solar interior to the low corona. A twisted magnetic flux…

太阳与恒星天体物理 · 物理学 2015-06-17 David MacTaggart , Andrew Haynes

Current theoretical ideas on the internal structure of CMEs suggest that a flux rope is central to the CME structure, which has considerable observational support both from remote-sensing and in-situ observations. The flux-rope nature is…

太阳与恒星天体物理 · 物理学 2015-06-15 Nat Gopalswamy

The ideal helical kink instability of a force-free coronal magnetic flux rope, anchored in the photosphere, is studied as a model for solar eruptions. Using the flux rope model of Titov & Demoulin (1999} as the initial condition in MHD…

天体物理学 · 物理学 2009-11-13 T. Toeroek , B. Kliem

In this study, we analyze nine CMEs from the Sun to Earth as observed in both the remote sensing and in situ data sets. To date, this is the largest study of Earth impacting CMEs using the multi-view point remote sensing and in situ data.…

太阳与恒星天体物理 · 物理学 2012-06-20 Robin C. Colaninno

A post-CME current sheet (CS) is a common feature developed behind an erupting flux rope in CME models. Observationally, white light observations have recorded many occurrences of a thin ray appearing behind a CME eruption that closely…

太阳与恒星天体物理 · 物理学 2015-05-19 Yuan-Kuen Ko , John C. Raymond , Bojan Vrsnak , Eugen Vujic

Coronal rain is the most dramatic cooling phenomenon of the solar corona and an essential diagnostic tool for the coronal heating properties. A puzzling feature of the solar corona, besides the heating, is its EUV filamentary structure and…

In an effort to develop computational tools for predicting radiation hazards from solar energetic particles (SEPs), we have created a data-driven physics-based particle transport model to calculate the injection, acceleration and…

太阳与恒星天体物理 · 物理学 2023-06-14 Ming Zhang , Lei Cheng , Ju Zhang , Pete Riley , Ryun Young Kwon , David Lario , Laura Balmaceda , Nikolai Pogorelov

A solar eruptive event SOL2010-06-13 observed with SDO/AIA has been discussed in the contexts of the CME gebesis and an associated EUV transient in terms of a shock driven by the apparent CME rim. We have revealed in this event an erupting…

Geometric modelling of Coronal Mass Ejections (CMEs) is a widely used tool for assessing their kinematic evolution. Furthermore, techniques based on geometric modelling, such as ELEvoHI, are being developed into forecast tools for space…

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

Computational Fluid Dynamics (CFD)-based global solar coronal simulations are slowly making their way into the space weather modeling toolchains to replace the semi-empirical methods such as the Wang-Sheeley-Arge (WSA) model. However, since…

太阳与恒星天体物理 · 物理学 2023-03-21 Michaela Brchnelova , Błażej Kuźma , Fan Zhang , Barbara Perri , Andrea Lani , Stefaan Poedts

The solar magnetized corona is responsible for various manifestations with a space weather impact, such as flares, coronal mass ejections (CMEs) and, naturally, the solar wind. Modeling the corona's dynamics and evolution is therefore…

太阳与恒星天体物理 · 物理学 2024-10-29 Grégoire Francisco , Francesco Pio Ramunno , Manolis K. Georgoulis , João Fernandes , Teresa Barata , Dario Del Moro