Mostrar el registro sencillo del ítem
dc.contributor.author
Verbeke, Christine
dc.contributor.author
Schmieder, Brigitte
dc.contributor.author
Démoulin, Pascal
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Dasso, Sergio Ricardo
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Grison, Benjamin
dc.contributor.author
Samara, Evangelia
dc.contributor.author
Scolini, Camilla
dc.contributor.author
Poedts, Stefaan
dc.date.available
2023-11-15T16:04:10Z
dc.date.issued
2022-09
dc.identifier.citation
Verbeke, Christine; Schmieder, Brigitte; Démoulin, Pascal; Dasso, Sergio Ricardo; Grison, Benjamin; et al.; Over-expansion of coronal mass ejections modelled using 3D MHD EUHFORIA simulations; Elsevier; Advances in Space Research; 70; 6; 9-2022; 1663-1683
dc.identifier.issn
0273-1177
dc.identifier.uri
http://hdl.handle.net/11336/218210
dc.description.abstract
Context: Coronal mass ejections (CMEs) are large-scale eruptions observed close to the Sun. They travel through the heliosphere and possibly interact with the Earth environment, creating interruptions or even damaging new-technology instruments. Most of the time their physical conditions (velocity, density and pressure) are measured in situ at only one point in space, with no possibility of having information on the variation of these parameters during their journey from the Sun to Earth. Aim: Our aim is to understand the evolution of the internal physical parameters of a set of three particular fast halo CMEs. These CMEs were launched between 15 and 18 July 2002. Surprisingly, the related interplanetary CMEs (ICMEs), observed near Earth, have a low, and in one case a very low, plasma density. Method: We use the EUropean Heliospheric FORecasting Information Asset (EUHFORIA) model to simulate the propagation of the CMEs in the background solar wind by placing virtual spacecraft along the Sun–Earth line. We set up the initial conditions at 0.1 au, first with a cone model and then with a linear force-free spheromak model. Results: Relatively good agreement between the simulation results and observations concerning the speed, density and arrival times of the ICMEs is obtained by adjustment of the initial CME parameters. In particular, this is achieved by increasing the initial magnetic pressure so that a fast expansion is induced in the inner heliosphere. This resulted in the development of fast expansion for two of the three ICMEs. In contrast, the intermediate ICME is strongly overtaken by the last ICME, so its expansion is strongly limited. Conclusions: First, we show that a magnetic configuration with an out-of-force balance close to the Sun mitigates the EUHFORIA assumptions related to an initial uniform velocity. Second, the overexpansion of the ejected magnetic configuration in the inner heliosphere is one plausible origin for the low density observed in some ICMEs at 1 au. Furthermore, we conclude for one ICME, surrounded by two other ICMEs, that the in situ observed very low density has a possible coronal origin.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
MAGNETOHYDRODYNAMICS
dc.subject
SOLAR WIND
dc.subject
SOLAR–TERRESTRIAL RELATIONS
dc.subject
SUN: CORONAL MASS EJECTIONS
dc.subject
SUN: HELIOSPHERE
dc.subject.classification
Astronomía
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
Ciencias Físicas
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.title
Over-expansion of coronal mass ejections modelled using 3D MHD EUHFORIA simulations
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-11-14T14:31:18Z
dc.journal.volume
70
dc.journal.number
6
dc.journal.pagination
1663-1683
dc.journal.pais
Países Bajos
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Verbeke, Christine. Katholikie Universiteit Leuven; Bélgica
dc.description.fil
Fil: Schmieder, Brigitte. Katholikie Universiteit Leuven; Bélgica. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
dc.description.fil
Fil: Démoulin, Pascal. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
dc.description.fil
Fil: Dasso, Sergio Ricardo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
dc.description.fil
Fil: Grison, Benjamin. Physics of the Czech Academy of Science; República Checa
dc.description.fil
Fil: Samara, Evangelia. Katholikie Universiteit Leuven; Bélgica
dc.description.fil
Fil: Scolini, Camilla. University of New Hampshire; Estados Unidos
dc.description.fil
Fil: Poedts, Stefaan. Katholikie Universiteit Leuven; Bélgica
dc.journal.title
Advances in Space Research
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.asr.2022.06.013
Archivos asociados