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We present a 3-D morphological and field reconstruction of a coronal mass ejection (CME) from 2023 November 28, which hits three spacecraft near 1 au: Wind at Earth's L1 Lagrange point; STEREO-A with a longitudinal separation of…

Solar and Stellar Astrophysics · Physics 2025-03-07 Brian E. Wood , Phillip Hess

Extreme ultraviolet (EUV) images from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamic Observatory (SDO) are providing new insights into the early phase of CME evolution. Observations now show the ejection of magnetic flux…

Solar and Stellar Astrophysics · Physics 2014-09-05 Paolo Pagano , Duncan H. Mackay , Stefaan Poedts

Predicting the effects of a coronal mass ejection (CME) impact requires knowing if impact will occur, which part of the CME impacts, and its magnetic properties. We explore the relation between CME deflections and rotations, which change…

Space Physics · Physics 2018-01-31 C. Kay , N. Gopalswamy

Context: Coronal mass ejections (CMEs) are rapid eruptions of magnetized plasma that occur on the Sun, which are known as the main drivers of adverse space weather. Accurately tracking their evolution in the heliosphere in numerical models…

Solar and Stellar Astrophysics · Physics 2023-11-23 Jinhan Guo , L. Linan , S. Poedts , Y. Guo , A. Lani , B. Schmieder , M. Brchnelova , B. Perri , T. Baratashvili , Y. W. Ni , P. F. Chen

In-situ measurements carried out by spacecraft in radial alignment are critical to advance our knowledge on the evolutionary behavior of coronal mass ejections (CMEs) and their magnetic structures during propagation through interplanetary…

Solar and Stellar Astrophysics · Physics 2021-08-11 Camilla Scolini , Reka M. Winslow , Noé Lugaz , Stefaan Poedts

Total solar eclipses (TSEs) provide a unique opportunity to observe the large-scale solar corona. The solar wind plays an important role in forming the large-scale coronal structure and magnetohydrodynamic (MHD) simulations are used to…

Solar and Stellar Astrophysics · Physics 2025-11-26 Yihua Li , Guoyin Chen , Jinhan Guo , Yang Guo , Hao Wu , Yuhao Huang , Xin Cheng , Mingde Ding , Rony Keppens

In this study, we evaluate a coronal mass ejection (CME) arrival prediction tool that utilizes the wide-angle observations made by STEREO's heliospheric imagers (HI). The unsurpassable advantage of these imagers is the possibility to…

Interest in stealth coronal mass ejections (CMEs) is increasing due to their relatively high occurrence rate and space weather impact. However, typical CME signatures such as extreme-ultraviolet dimmings and post-eruptive arcades are hard…

We present results from 3D magnetohydrodynamic (MHD) simulations of the emergence of a twisted convection zone flux tube into a pre-existing coronal dipole field. As in previous simulations, following the partial emergence of the…

Solar and Stellar Astrophysics · Physics 2015-06-18 J. E. Leake , M. G. Linton , S. K. Antiochos

It is well known that magnetic fields dominate the dynamics in the solar corona, and new generation of numerical modelling of the evolution of coronal magnetic fields, as featured with boundary conditions driven directly by observation…

Solar and Stellar Astrophysics · Physics 2021-04-16 Chaowei Jiang , Xinkai Bian , Tingting Sun , Xueshang Feng

Coronal mass ejections (CMEs) are powerful drivers of space weather, with magnetic flux ropes (MFRs) widely regarded as their primary precursors. However, the variation in reconnection flux during the evolution of MFR during CME eruptions…

Solar and Stellar Astrophysics · Physics 2026-04-16 Samriddhi Sankar Maity , Piyali Chatterjee , Ranadeep Sarkar , Ijas S. Mytheen

We report on the characterization of a coronal mass ejection (CME) observed on 22 October 2003 by the LASCO-C2 and C3 coronagraphs over a time interval of 6 hours. This CME clearly appears as an asymmetric flux-rope in self-similar…

Solar and Stellar Astrophysics · Physics 2025-10-08 Philippe Lamy , Yannick Boursier , Jean Loirat , Andrei Zhukov

Coronal mass ejections (CMEs) are major drivers of geomagnetic storms, which may cause severe space weather effects. Automating the detection, tracking, and three-dimensional (3D) reconstruction of CMEs is important for operational…

Solar and Stellar Astrophysics · Physics 2024-06-06 Jiahui Shan , Huapeng Zhang , Lei Lu , Yan Zhang , Li Feng , Yunyi Ge , Jianchao Xue , Shuting Li

Interplanetary coronal mass ejections (ICMEs) are one of the main drivers for space weather disturbances. In the past, different approaches have been used to automatically detect events in existing time series resulting from solar wind in…

We present a new version of the MURaM radiative MHD code that allows for simulations spanning from the upper convection zone into the solar corona. We implemented the relevant coronal physics in terms of optically thin radiative loss, field…

Solar and Stellar Astrophysics · Physics 2016-12-28 Matthias Rempel

Accurate forecasts of Coronal Mass Ejection (CME) arrival times and impact geometry remain a major challenge for space-weather operations. Coronagraph-based techniques typically achieve mean absolute errors of order ten hours, while in situ…

Solar and Stellar Astrophysics · Physics 2025-12-02 Marti Masso Moreno , Carlos Arturo Perez-Alanis , P. K. Manoharan

Coronal mass ejections (CMEs) on stars other than the Sun have proven very difficult to detect. One promising pathway lies in the detection of type II radio bursts. Their appearance and distinctive properties are associated with the…

We report the results of the first state-of-the-art numerical simulations of Coronal Mass Ejections (CMEs) taking place in realistic magnetic field configurations of moderately active M-dwarf stars. Our analysis indicates that a clear,…

We report on an observationally constrained analytical model, the INterplanetary Flux ROpe Simulator (INFROS), for predicting the magnetic-field vectors of coronal mass ejections (CMEs) in the interplanetary medium. The main architecture of…

Solar and Stellar Astrophysics · Physics 2020-01-29 Ranadeep Sarkar , Nat Gopalswamy , Nandita Srivastava

The vulnerability of technology on which present society relies demands that a solar event, its time of arrival at Earth, and its degree of geoeffectiveness be promptly forecasted. Motivated by improving predictions of arrival times at…

Solar and Stellar Astrophysics · Physics 2015-11-04 H. Cremades , F. A. Iglesias , O. C. St. Cyr , H. Xie , M. L. Kaiser , N. Gopalswamy