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Forecasting the geomagnetic effects of solar storms, known as coronal mass ejections (CMEs), is currently severely limited by our inability to predict the magnetic field configuration in the CME magnetic core and by observational effects of…

The INterplanetary Flux ROpe Simulator (INFROS) is an observationally constrained analytical model dedicated for forecasting the strength of the southward component (Bz) of the magnetic field embedded in interplanetary coronal mass…

Solar and Stellar Astrophysics · Physics 2024-06-14 Ranadeep Sarkar , Nandita Srivastava , Nat Gopalswamy , Emilia Kilpua

Understanding the properties, especially the magnetohydrodynamic (MHD) invariants, of coronal mass ejections (CMEs) measured in-situ is key to bridging the CME properties from the Sun to interplanetary space. In order to investigate CMEs…

Solar coronal mass ejections (CME) are routinely observed, but as of yet there exist few convincing detections of stellar CMEs. A reason for this could be the stronger magnetic fields of these stars, compared to that of our Sun, would…

The estimation of CME arrival time strongly depends on the CME propagation models in interplanetary space and the geometrical aspects of the CME model. We conducted ensemble simulations of CMEs propagation with various elliptical cone…

Forecasting the in situ properties of coronal mass ejections (CMEs) from remote images is expected to strongly enhance predictions of space weather, and is of general interest for studying the interaction of CMEs with planetary…

Coronal Mass Ejections (CMEs) are energetic storms in the Sun that result in the ejection of large-scale magnetic clouds (MCs) in interplanetary space that contain enhanced magnetic fields with coherently changing field direction. The…

Solar and Stellar Astrophysics · Physics 2022-11-09 Sanchita Pal , Dibyendu Nandy , Emilia K J Kilpua

Coronal Mass Ejections (CMEs) evolve significantly as they propagate from the Sun to the Earth, so remote observations of their changes in speed, strength of the magnetic field, density, and overall structure are critical for predicting…

Instrumentation and Methods for Astrophysics · Physics 2025-06-02 Elizabeth A. Jensen , Ward B. Manchester , Jason E. Kooi , Teresa Nieves-Chinchilla , Lan K. Jian , David B. Wexler , Shing Fung , Natchimuthuk Gopalswamy

Solar coronal dimmings have been observed extensively in the past two decades. Due to their close association with coronal mass ejections (CMEs), there is a critical need to improve our understanding of the physical processes that cause…

Solar and Stellar Astrophysics · Physics 2022-04-13 Meng Jin , Mark C. M. Cheung , Marc L. DeRosa , Nariaki V. Nitta , Carolus J. Schrijver

In order to advance our understanding of the dynamic interactions between coronal mass ejections (CMEs) and the magnetized solar wind, we investigate the impact of magnetic erosion on the well-known aerodynamic drag force acting on CMEs…

Solar and Stellar Astrophysics · Physics 2023-07-25 Sotiris Stamkos , Spiros Patsourakos , Angelos Vourlidas , Ioannis A. Daglis

Stellar coronal mass ejections (CMEs) may play an important role in mass- and angular momentum loss of young Sun-like stars. If occurring frequently, they may also have a strong effect on planetary evolution by increasing atmospheric…

Solar and Stellar Astrophysics · Physics 2017-09-21 P. Odert , M. Leitzinger , A. Hanslmeier , H. Lammer

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

A discrete tomography method has been developed that is able to reconstruct three-dimensional coronal mass ejection (CME) density structure. We test the method by producing synthetic coronagraph imagery for three events using the…

We perform a numerical study of the evolution of a Coronal Mass Ejection (CME) and its interaction with the coronal magnetic field based on the May 12, 1997, CME event using a global MagnetoHydroDynamic (MHD) model for the solar corona. The…

Solar and Stellar Astrophysics · Physics 2015-05-19 O. Cohen , G. D. R. Attrill , N. A. Schwadron , N. U. Crooker , M. J. Owens , C. Downs , T. I. Gombosi

A key challenge in space weather forecasting is accurately predicting the magnetic field topology of interplanetary coronal mass ejections (ICMEs), specifically the north-south magnetic field component (Bz) for Earth-directed CMEs.…

Solar and Stellar Astrophysics · Physics 2023-11-28 Ranadeep Sarkar , Jens Pomoell , Emilia Kilpua , Eleanna Asvestari , Nicolas Wijsen , Anwesha Maharana , Stefaan Poedts

We determine the 3D geometry and deprojected mass of 29 well-observed coronal mass ejections (CMEs) and their interplanetary counterparts (ICMEs) using combined STEREO-SOHO white-light data. From the geometry parameters we calculate the…

Aims. The magnetic field of coronal mass ejections (CMEs) determines their structure, evolution, and energetics, as well as their geoeffectiveness. However, we currently lack routine diagnostics of the near-Sun CME magnetic field, which is…

Solar and Stellar Astrophysics · Physics 2016-09-02 S. Patsourakos , M. K. Georgoulis

Simultaneous in situ measurements of coronal mass ejections (CMEs), including both plasma and magnetic field, by two spacecraft in radial alignment have been extremely rare. Here, we report on one such CME measured by Solar Orbiter (SolO)…

Solar and Stellar Astrophysics · Physics 2023-11-27 F. Regnault , N. Al-Haddad , N. Lugaz , C. J. Farrugia , W. Yu , B. Zhuang , E. E. Davies

Aims. Our goal is to thoroughly analyse the dynamics of single and multiple solar eruptions, as well as a stealth ejecta. The data were obtained through self-consistent numerical simulations performed in a previous study. We also assess the…

Solar and Stellar Astrophysics · Physics 2022-07-13 Dana-Camelia Talpeanu , Stefaan Poedts , Elke D'Huys , Marilena Mierla , Ian G. Richardson

Interplanetary scintillation (IPS) is a useful tool for detecting coronal mass ejections (CMEs) throughout interplanetary space. Global magnetohydrodynamic (MHD) simulations of the heliosphere, which are usually used to predict the arrival…

Solar and Stellar Astrophysics · Physics 2022-09-27 Kazumasa Iwai , Richard A. Fallows , Mario M. Bisi , Daikou Shiota , Bernard V. Jackson , Munetoshi Tokumaru , Ken'ichi Fujiki
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