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- Coronal mass ejections (1)
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- Interplanetary coronal mass ejections (1)
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- Large-amplitude Alfvén waves (1)
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Articles 1 - 9 of 9
Full-Text Articles in Entire DC Network
Deriving Cme Density From Remote Sensing Data And Comparison To In- Situ Measurements, M. Temmer, L. Holzknecht, M. Dumbovic, B. Vrsnak, N. Sachdeva, S. G. Heinemann, K. Dissauer, Camilla Scolini, E. Asvestari, A. M. Veronig, S. J. Hofmeister
Deriving Cme Density From Remote Sensing Data And Comparison To In- Situ Measurements, M. Temmer, L. Holzknecht, M. Dumbovic, B. Vrsnak, N. Sachdeva, S. G. Heinemann, K. Dissauer, Camilla Scolini, E. Asvestari, A. M. Veronig, S. J. Hofmeister
Coronal Mass Ejection Research Group
We determine the three-dimensional geometry and deprojected mass of 29 well-observed coronal mass ejections (CMEs) and their interplanetary counterparts (ICMEs) using combined Solar Terrestrial Relations Observatory - Solar and Heliospheric Observatory white-light data. From the geometry parameters, we calculate the volume of the CME for the magnetic ejecta (flux-rope type geometry) and sheath structure (shell-like geometry resembling the (I)CME frontal rim). Working under the assumption that the CME mass is roughly equally distributed within a specific volume, we expand the CME self-similarly and calculate the CME density for distances close to the Sun (15–30 Rs) and at 1 AU. Specific …
On The Radial And Longitudinal Variation Of A Magnetic Cloud: Ace, Wind, Artemis And Juno Observations, Solar Physics, Emma E. Davies, Robert J. Forsyth, Simon W. Good, Emilia K. J. Kilpua
On The Radial And Longitudinal Variation Of A Magnetic Cloud: Ace, Wind, Artemis And Juno Observations, Solar Physics, Emma E. Davies, Robert J. Forsyth, Simon W. Good, Emilia K. J. Kilpua
Coronal Mass Ejection Research Group
We present observations of the same magnetic cloud made near Earth by the Advance Composition Explorer (ACE), Wind, and the Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon’s Interaction with the Sun (ARTEMIS) mission comprising the Time History of Events and Macroscale Interactions during Substorms (THEMIS) B and THEMIS C spacecraft, and later by Juno at a distance of 1.2 AU. The spacecraft were close to radial alignment throughout the event, with a longitudinal separation of 3.6∘ between Juno and the spacecraft near Earth. The magnetic cloud likely originated from a filament eruption on 22 October 2011 at 00:05 UT, …
Three Dimensional Simulations Of Solar Wind Preconditioning And The 23 July 2012 Interplanetary Coronal Mass Ejection, Ravindra T. Desai, Han Zhang, Emma E. Davies, Julia E. Stawarz, Joan Mico-Gomez, Pilar Ivanez-Ballesteros
Three Dimensional Simulations Of Solar Wind Preconditioning And The 23 July 2012 Interplanetary Coronal Mass Ejection, Ravindra T. Desai, Han Zhang, Emma E. Davies, Julia E. Stawarz, Joan Mico-Gomez, Pilar Ivanez-Ballesteros
Coronal Mass Ejection Research Group
Predicting the large-scale eruptions from the solar corona and their propagation through interplanetary space remains an outstanding challenge in solar- and helio-physics research. In this article, we describe three-dimensional magnetohydrodynamic simulations of the inner heliosphere leading up to and including the extreme interplanetary coronal mass ejection (ICME) of 23 July 2012, developed using the code PLUTO. The simulations are driven using the output of coronal models for Carrington rotations 2125 and 2126 and, given the uncertainties in the initial conditions, are able to reproduce an event of comparable magnitude to the 23 July ICME, with similar velocity and density profiles …
Space Weather Monitor At The L5 Point: A Case Study Of A Cme Observed With Stereo B, L. Rodriguez, Camilla Scolini, M. Mierla, A. N. Zhukov, M. J. West
Space Weather Monitor At The L5 Point: A Case Study Of A Cme Observed With Stereo B, L. Rodriguez, Camilla Scolini, M. Mierla, A. N. Zhukov, M. J. West
Coronal Mass Ejection Research Group
An important location for future space weather monitoring is the Lagrange point 5 (L5) of the Sun-Earth system. We test the performance of L5 for space weather monitoring using STEREO B observations of an Earth-directed coronal mass ejection (CME), seen as a partial halo by SOHO at L1. STEREO B (located close to L5) continuously tracked the CME. By using these data in combination with methods to calculate the CME arrival time at the Earth (extrapolation, drag-based model, and a magnetohydrodynamic model), we demonstrate that the estimation of the CME arrival time can be drastically improved by adding L5 data. …
European Heliospheric Forecasting Information Asset 2.0, Stefaan Poedts, Andrea Lani, Camilla Scolini, Christine Verbeke, Nicolas Wijsen, Giovanni Lapenta, Brecht Laperre, Dimitrios Millas, Maria Elena Innocenti, Emmanuel Chane, Tinatin Baratashvili, Evangelia Samara, Ronald Van Der Linden, Luciano Rodriguez, Petra Vanlommel, Rami Vainio, Alexandr Afanasiev, Emilia Kilpua, Jens Pomoell, Ranadeep Sarkar, Angels Aran, Blai Sanahuja, Joseph M. Paredes, Ellen Clarke, Alan Thomson, Alexis Rouilard, Rui F. Pinto, Aurelie Marchaudon, Pierre-Louis Blelly, Blandine Gorce, Illya Plotnikov, Athanasis Kouloumvakos, Bernd Heber, Konstantin Herbst, Andrey Kochanov, Joachim Raeder, Jan Depauw
European Heliospheric Forecasting Information Asset 2.0, Stefaan Poedts, Andrea Lani, Camilla Scolini, Christine Verbeke, Nicolas Wijsen, Giovanni Lapenta, Brecht Laperre, Dimitrios Millas, Maria Elena Innocenti, Emmanuel Chane, Tinatin Baratashvili, Evangelia Samara, Ronald Van Der Linden, Luciano Rodriguez, Petra Vanlommel, Rami Vainio, Alexandr Afanasiev, Emilia Kilpua, Jens Pomoell, Ranadeep Sarkar, Angels Aran, Blai Sanahuja, Joseph M. Paredes, Ellen Clarke, Alan Thomson, Alexis Rouilard, Rui F. Pinto, Aurelie Marchaudon, Pierre-Louis Blelly, Blandine Gorce, Illya Plotnikov, Athanasis Kouloumvakos, Bernd Heber, Konstantin Herbst, Andrey Kochanov, Joachim Raeder, Jan Depauw
Coronal Mass Ejection Research Group
Aims: This paper presents a H2020 project aimed at developing an advanced space weather forecasting tool, combining the MagnetoHydroDynamic (MHD) solar wind and coronal mass ejection (CME) evolution modelling with solar energetic particle (SEP) transport and acceleration model(s). The EUHFORIA 2.0 project will address the geoeffectiveness of impacts and mitigation to avoid (part of the) damage, including that of extreme events, related to solar eruptions, solar wind streams, and SEPs, with particular emphasis on its application to forecast geomagnetically induced currents (GICs) and radiation on geospace. Methods: We will apply innovative methods and state-of-the-art numerical techniques to extend the recent …
Characteristics Of Minor Ions And Electrons In Flux Transfer Events Observed By The Magnetospheric Multiscale Mission, S. M. Petrinec, J. L. Burch, M. Chandler, Charlie J. Farrugia, S. A. Fuselier, B. L. Giles, R. G. Gomez, J. Mukherjee, W. R. Paterson, C. T. Russell, D. G. Sibeck, Robert J. Strangeway, Roy B. Torbert, Karlheinz J. Trattner, S. K. Vines, C. Zhao
Characteristics Of Minor Ions And Electrons In Flux Transfer Events Observed By The Magnetospheric Multiscale Mission, S. M. Petrinec, J. L. Burch, M. Chandler, Charlie J. Farrugia, S. A. Fuselier, B. L. Giles, R. G. Gomez, J. Mukherjee, W. R. Paterson, C. T. Russell, D. G. Sibeck, Robert J. Strangeway, Roy B. Torbert, Karlheinz J. Trattner, S. K. Vines, C. Zhao
Coronal Mass Ejection Research Group
In this study, the ion composition of flux transfer events (FTEs) observed within the magnetosheath proper is examined. These FTEs were observed just upstream of the Earth's postnoon magnetopause by the National Aeronautics and Space Administration (NASA) Magnetospheric Multiscale (MMS) spacecraft constellation. The minor ion characteristics are described using energy spectrograms, flux distributions, and ion moments as the constellation encountered each FTE. In conjunction with electron data and magnetic field observations, such observations provide important contextual information on the formation, topologies, and evolution of FTEs. In particular, minor ions, when combined with the field-aligned streaming of electrons, are reliable indicators …
A Study Of A Magnetic Cloud Propagating Through Large-Amplitude Alfven Waves, Charlie J. Farrugia, Noe Lugaz, Bernard J. Vasquez, L. B. Wilson Iii, Wenyuan Yu, K. Paulson, Roy B. Torbert, F. T. Gratton
A Study Of A Magnetic Cloud Propagating Through Large-Amplitude Alfven Waves, Charlie J. Farrugia, Noe Lugaz, Bernard J. Vasquez, L. B. Wilson Iii, Wenyuan Yu, K. Paulson, Roy B. Torbert, F. T. Gratton
Coronal Mass Ejection Research Group
We discuss Wind observations of a long and slow magnetic cloud (MC) propagating through large-amplitude Alfvén waves (LAAWs). The MC axis has a strong component along GSE X, as also confirmed by a Grad-Shafranov reconstruction. It is overtaking the solar wind at a speed roughly equal to the upstream Alfvén speed, leading to a weak shock wave 17 hr ahead. We give evidence to show that the nominal sheath region is populated by LAAWs: (i) a well-defined de Hoffmann-Teller frame in which there is excellent correlation between the field and flow vectors, (ii) constant field and total pressure, and (iii) …
The Virtual Space Weather Modelling Centre, Stefaan Poedts, Andrey Kochanov, Andrea Lani, Camilla Scolini, Christine Verbeke, Skralan Hosteaux, Emmanuel Chane, Herman Deconinck, Nicolae Mihalache, Fabian Diet, Daniel Heynderickx, Johan De Keyser, Erwin De Donder, Norma B. Crosby, Marius Echim, Luciano Rodriguez, Robbe Vansintjan, Freek Verstringe, Benjamin Mampaey, Richard Horne, Sarah Glauert, Piers Jiggens, Ralf Keil, Alexi Glover, Gregoire Deprez, Juha-Pekka Luntama
The Virtual Space Weather Modelling Centre, Stefaan Poedts, Andrey Kochanov, Andrea Lani, Camilla Scolini, Christine Verbeke, Skralan Hosteaux, Emmanuel Chane, Herman Deconinck, Nicolae Mihalache, Fabian Diet, Daniel Heynderickx, Johan De Keyser, Erwin De Donder, Norma B. Crosby, Marius Echim, Luciano Rodriguez, Robbe Vansintjan, Freek Verstringe, Benjamin Mampaey, Richard Horne, Sarah Glauert, Piers Jiggens, Ralf Keil, Alexi Glover, Gregoire Deprez, Juha-Pekka Luntama
Coronal Mass Ejection Research Group
Aims. Our goal is to develop and provide an open end-to-end (Sun to Earth) space weather modeling system, enabling to combine (“couple”) various space weather models in an integrated tool, with the models located either locally or geographically distributed, so as to better understand the challenges in creating such an integrated environment. Methods. The physics-based models are installed on different compute clusters and can be run interactively and remotely and that can be coupled over the internet, using open source “high-level architecture” software, to make complex modeling chains involving models from the Sun to the Earth. Visualization tools have been …
Improving Predictions Of High-Latitude Coronal Mass Ejections Throughout The Heliosphere, Camilla Scolini, E. Chane, J. Pomoell, L. Rodriguez, S. Poedts
Improving Predictions Of High-Latitude Coronal Mass Ejections Throughout The Heliosphere, Camilla Scolini, E. Chane, J. Pomoell, L. Rodriguez, S. Poedts
Coronal Mass Ejection Research Group
Predictions of the impact of coronal mass ejections (CMEs) in the heliosphere mostly rely on cone CME models, whose performances are optimized for locations in the ecliptic plane and at 1 AU (e.g., at Earth). Progresses in the exploration of the inner heliosphere, however, advocate the need to assess their performances at both higher latitudes and smaller heliocentric distances. In this work, we perform 3-D magnetohydrodynamics simulations of artificial cone CMEs using the EUropean Heliospheric FORecasting Information Asset (EUHFORIA), investigating the performances of cone models in the case of CMEs launched at high latitudes. We compare results obtained initializing CMEs …