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View article: Can Alfvénic Fluctuations Affect the Correlation and Complexity of Magnetic Field of Magnetic Ejecta? A Case Study Based on Multi-spacecraft Measurements at 1 au
Can Alfvénic Fluctuations Affect the Correlation and Complexity of Magnetic Field of Magnetic Ejecta? A Case Study Based on Multi-spacecraft Measurements at 1 au Open
We investigate whether Alfvénic fluctuations (AFs) can affect the structure of magnetic ejecta (ME) within interplanetary coronal mass ejections (ICMEs). We study an ICME observed on 2001 December 29 at 1 au by the Advanced Composition Exp…
View article: Can Alfvénic Fluctuations Affect the Correlation and Complexity of Magnetic Fields in Magnetic Ejecta? A Case Study Based on Multi-Spacecraft Measurements at 1~au
Can Alfvénic Fluctuations Affect the Correlation and Complexity of Magnetic Fields in Magnetic Ejecta? A Case Study Based on Multi-Spacecraft Measurements at 1~au Open
We investigate whether Alfvénic fluctuations (AFs) can affect the structure of magnetic ejecta (MEs) within interplanetary coronal mass ejections (ICMEs). We study an ICME observed on 2001 December 29 at 1 au by ACE and Wind, at a total an…
View article: Characterization of Small Flux Ropes Using Juno Spacecraft Cruise-phase Data
Characterization of Small Flux Ropes Using Juno Spacecraft Cruise-phase Data Open
In this study, we utilize magnetic field data from the Juno mission’s cruise phase to visually identify and analyze 338 interplanetary small flux ropes (SFRs) across a heliocentric distance range of 1–5.5 au. The events are uniformly distr…
View article: The Need for Near-Earth Multi-Spacecraft Heliospheric Measurements and an Explorer Mission to Investigate Interplanetary Structures and Transients in the Near-Earth Heliosphere
The Need for Near-Earth Multi-Spacecraft Heliospheric Measurements and an Explorer Mission to Investigate Interplanetary Structures and Transients in the Near-Earth Heliosphere Open
Based on decades of single-spacecraft measurements near 1 au as well as data from heliospheric and planetary missions, multi-spacecraft simultaneous measurements in the inner heliosphere on separations of 0.05-0.2 au are required to close …
View article: Coronal Models and Detection of the Open Magnetic Field
Coronal Models and Detection of the Open Magnetic Field Open
A plethora of coronal models, from empirical to more complex magnetohydrodynamic (MHD) ones, are being used for reconstructing the coronal magnetic field topology and estimating the open magnetic flux. However, no individual solution fully…
View article: Validation of EUHFORIA cone and spheromak coronal mass ejection models
Validation of EUHFORIA cone and spheromak coronal mass ejection models Open
Aims. We present validation results for calculations of arrival times and geomagnetic impact of coronal mass ejections (CMEs) using the cone and spheromak CME models implemented in EUropean Heliospheric FORecasting Information Asset (EUHFO…
View article: Validation of EUHFORIA cone and spheromak Coronal Mass Ejection Models
Validation of EUHFORIA cone and spheromak Coronal Mass Ejection Models Open
Aims. We present the validation results for arrival times and geomagnetic impact of Coronal Mass Ejections (CMEs), using the cone and spheromak CME models implemented in EUropean Heliospheric FORecasting Information Asset (EUHFORIA). Valid…
View article: Employing the Coupled EUHFORIA‐OpenGGCM Model to Predict CME Geoeffectiveness
Employing the Coupled EUHFORIA‐OpenGGCM Model to Predict CME Geoeffectiveness Open
EUropean Heliospheric FORecasting Information Asset (EUHFORIA) is a physics‐based data‐driven solar wind and coronal mass ejections (CMEs) propagation model designed for space weather forecasting and event analysis investigations. Although…
View article: On the Origin of the Sudden Heliospheric Open Magnetic Flux Enhancement During the 2014 Pole Reversal
On the Origin of the Sudden Heliospheric Open Magnetic Flux Enhancement During the 2014 Pole Reversal Open
Coronal holes are recognized as the primary sources of heliospheric open magnetic flux (OMF). However, a noticeable gap exists between in situ measured OMF and that derived from remote-sensing observations of the Sun. In this study, we inv…
View article: Employing the coupled EUHFORIA-OpenGGCM model to predict CME geoeffectiveness
Employing the coupled EUHFORIA-OpenGGCM model to predict CME geoeffectiveness Open
EUropean Heliospheric FORecasting Information Asset (EUHFORIA) is a physics-based data-driven solar wind and CME propagation model designed for space weather forecasting and event analysis investigations. Although EUHFORIA can predict the …
View article: The Space Weather Research on Coronal Mass Ejections Required Before Operational Sub-L1 Monitors
The Space Weather Research on Coronal Mass Ejections Required Before Operational Sub-L1 Monitors Open
In-situ measurements from the Sun-Earth Lagrangian L1 point typically provide a 20-minute to 1-hour advanced warning of incoming interplanetary (IP) shocks, magnetic clouds before impact at the nose of Earth's magnetopause. Sub-L1 monitors…
View article: On quantifying the impact of CME magnetic flux and mass erosion on geo-effectiveness 
On quantifying the impact of CME magnetic flux and mass erosion on geo-effectiveness  Open
Coronal mass ejections (CMEs) undergo erosion, deflection, and deformation upon interaction with the solar wind structures and with other transients during their propagation in the solar corona and heliosphere. In this work, we focus on th…
View article: On the Origin of the sudden Heliospheric Open Magnetic Flux Enhancement during the 2014 Pole Reversal
On the Origin of the sudden Heliospheric Open Magnetic Flux Enhancement during the 2014 Pole Reversal Open
Coronal holes are recognized as the primary sources of heliospheric open magnetic flux (OMF). However, a noticeable gap exists between in-situ measured OMF and that derived from remote sensing observations of the Sun. In this study, we inv…
View article: The Width of Magnetic Ejecta Measured near 1 au: Lessons from STEREO-A Measurements in 2021–2022
The Width of Magnetic Ejecta Measured near 1 au: Lessons from STEREO-A Measurements in 2021–2022 Open
Coronal mass ejections (CMEs) are large-scale eruptions with a typical radial size at 1 au of 0.21 au but their angular width in interplanetary space is still mostly unknown, especially for the magnetic ejecta (ME) part of the CME. We take…
View article: Refined Modeling of Geoeffective Fast Halo CMEs During Solar Cycle 24
Refined Modeling of Geoeffective Fast Halo CMEs During Solar Cycle 24 Open
The propagation of geoeffective fast halo coronal mass ejections (CMEs) from solar cycle 24 has been investigated using the European Heliospheric Forecasting Information Asset (EUHFORIA), ENLIL, Drag‐Based Model (DBM) and Effective Acceler…
View article: On the Role of Alfvénic Fluctuations as Mediators of Coherence within Interplanetary Coronal Mass Ejections: Investigation of Multi-spacecraft Measurements at 1 au
On the Role of Alfvénic Fluctuations as Mediators of Coherence within Interplanetary Coronal Mass Ejections: Investigation of Multi-spacecraft Measurements at 1 au Open
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, and…
View article: The spheroid CME model in EUHFORIA
The spheroid CME model in EUHFORIA Open
Predictions of coronal mass ejection (CME) propagation and impact in the heliosphere, in either research or operational settings, are usually performed by employing magnetohydrodynamic (MHD) models. Within such simulations, the CME ejecta …
View article: On the Role of Alfvenic Fluctuations as Mediators of Coherence within Interplanetary Coronal Mass Ejections: Investigation of Multi-Spacecraft Measurements at 1 au
On the Role of Alfvenic Fluctuations as Mediators of Coherence within Interplanetary Coronal Mass Ejections: Investigation of Multi-Spacecraft Measurements at 1 au Open
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, a…
View article: The Width of Magnetic Ejecta Measured Near 1 au: Lessons from STEREO-A Measurements in 2021--2022
The Width of Magnetic Ejecta Measured Near 1 au: Lessons from STEREO-A Measurements in 2021--2022 Open
Coronal mass ejections (CMEs) are large-scale eruptions with a typical radial size at 1 au of 0.21 au but their angular width in interplanetary space is still mostly unknown, especially for the magnetic ejecta (ME) part of the CME. We take…
View article: The Effect of Magnetic Field Line Topology on ICME-related GCR Modulation
The Effect of Magnetic Field Line Topology on ICME-related GCR Modulation Open
The large-scale magnetic structure of interplanetary coronal mass ejections (ICMEs) has been shown to affect the galactic cosmic-ray (GCR) flux measured in situ by spacecraft, causing temporary decreases known as Forbush decreases (FDs). I…
View article: Combining STEREO heliospheric imagers and Solar Orbiter to investigate the evolution of the 2022 March 10 CME
Combining STEREO heliospheric imagers and Solar Orbiter to investigate the evolution of the 2022 March 10 CME Open
Context. Coronal mass ejections (CMEs) are large-scale structures of magnetized plasma that erupt from the corona into interplanetary space. The launch of Solar Orbiter (SolO) in 2020 enables in situ measurements of CMEs in the innermost h…
View article: Coronal Models and Detection of Open Magnetic Field
Coronal Models and Detection of Open Magnetic Field Open
A plethora of coronal models, from empirical to more complex magnetohydrodynamic (MHD) ones, are being used for reconstructing the coronal magnetic field topology and estimating the open magnetic flux. However, no individual solution fully…
View article: On the Contribution of Coronal Mass Ejections to the Heliospheric Magnetic Flux Budget on Different Time Scales
On the Contribution of Coronal Mass Ejections to the Heliospheric Magnetic Flux Budget on Different Time Scales Open
Coronal mass ejections (CMEs) contribute closed magnetic flux to the heliosphere while they are connected at both ends to the Sun and play a key role in adding magnetic flux to the heliosphere. Here, we discuss how the type of magnetic rec…
View article: Modeling a Coronal Mass Ejection from an Extended Filament Channel. II. Interplanetary Propagation to 1 au
Modeling a Coronal Mass Ejection from an Extended Filament Channel. II. Interplanetary Propagation to 1 au Open
We present observations and modeling results of the propagation and impact at Earth of a high-latitude, extended filament channel eruption that commenced on 2015 July 9. The coronal mass ejection (CME) that resulted from the filament erupt…
View article: The effect of magnetic field line topology on ICME-related GCR modulation
The effect of magnetic field line topology on ICME-related GCR modulation Open
The large-scale magnetic structure of interplanetary coronal mass ejections (ICMEs) has been shown to affect the galactic cosmic ray (GCR) flux measured in situ by spacecraft, causing temporary decreases known as Forbush decreases (Fds). I…
View article: Modeling a Coronal Mass Ejection from an Extended Filament Channel. II. Interplanetary Propagation to 1 au
Modeling a Coronal Mass Ejection from an Extended Filament Channel. II. Interplanetary Propagation to 1 au Open
We present observations and modeling results of the propagation and impact at Earth of a high-latitude, extended filament channel eruption that commenced on 2015 July 9. The coronal mass ejection (CME) that resulted from the filament erupt…
View article: CME Propagation Through the Heliosphere: Status and Future of Observations and Model Development
CME Propagation Through the Heliosphere: Status and Future of Observations and Model Development Open
The ISWAT clusters H1+H2 have a focus on interplanetary space and its characteristics, especially on the large-scale co-rotating and transient structures impacting Earth. SIRs, generated by the interaction between high-speed solar wind ori…
View article: On the importance of investigating CME complexity evolution during interplanetary propagation
On the importance of investigating CME complexity evolution during interplanetary propagation Open
This white paper brings to light the need for comprehensive studies on the evolution of interplanetary coronal mass ejection (ICME) complexity during propagation.To date, few studies of ICME complexity exist.In this white paper, we define …
View article: Learn to Walk Before You Run: A Case for Fundamental CME Research Utilizing Idealized MHD Models
Learn to Walk Before You Run: A Case for Fundamental CME Research Utilizing Idealized MHD Models Open
Coronal mass ejections (CMEs) are the largest energy release events in the solar system (together with flares), and an integral part of the dynamics of the Sun's corona and the inner heliosphere.Despite a plethora of unsolved science quest…
View article: The Multi-spacecraft Heliospheric Mission (MHM)
The Multi-spacecraft Heliospheric Mission (MHM) Open
Whitepaper #249 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: space weather applications; basic research. Additional topics: inner heliosphere; other space weather; space-based missions/projects.