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dc.contributor.authorPagano, Paolo
dc.contributor.authorMackay, Duncan Hendry
dc.contributor.authorPoedts, Stephan
dc.date.accessioned2014-11-20T17:01:07Z
dc.date.available2014-11-20T17:01:07Z
dc.date.issued2014-08
dc.identifier157930420
dc.identifiere5686aa6-ddc6-42c1-baf4-a2d7ea6dd7c9
dc.identifier85006264136
dc.identifier000341185900096
dc.identifier.citationPagano , P , Mackay , D H & Poedts , S 2014 , ' Simulating AIA observations of a flux rope ejection ' , Astronomy & Astrophysics , vol. 568 , A120 . https://doi.org/10.1051/0004-6361/201424019en
dc.identifier.issn0004-6361
dc.identifier.otherORCID: /0000-0001-6065-8531/work/58055438
dc.identifier.urihttps://hdl.handle.net/10023/5821
dc.descriptionD.H.M. would like to thank STFC, the Leverhulme Trust and the European Commission’s Seventh Framework Programme (FP7/2007-2013) for their financial support. P.P. would like to thank the European Commission’s Seventh Framework Programme (FP7/2007-2013) under grant agreement SWIFF (project 263340, http://www.swiff.eu) and STFC for financial support. These results were obtained in the framework of the projects GOA/2009-009 (KU Leuven), G.0729.11 (FWO-Vlaanderen) and C 90347 (ESA Prodex 9). The research leading to these results has also received funding from the European Commission’s Seventh Framework Programme (FP7/2007-2013) under the grant agreements SOLSPANET (project No. 269299, http:// www.solspanet.eu), SPACECAST (project No. 262468, fp7-spacecast.eu), eHeroes (project n 284461, http://www.eheroes.eu). The computational work for this paper was carried out on the joint STFC and SFC (SRIF) funded cluster at the University of St Andrews (Scotland, UK).en
dc.description.abstractContext. Coronal mass ejections (CMEs) are the most violent phenomena observed on the Sun. Currently, 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. In particular, observations now show the ejection of magnetic flux ropes from the solar corona and how they evolve into CMEs. While this is the case, these observations are difficult to interpret in terms of basic physical mechanisms and quantities. To fully understand CMEs we need to compare equivalent quantities derived from both observations and theoretical models. This will aid in bridging the gap between observations and models. Aims: To this end, we aim to produce synthesised AIA observations from simulations of a flux rope ejection. To carry this out we include the role of thermal conduction and radiative losses, both of which are important for determining the temperature distribution of the solar corona during a CME. Methods: We perform a simulation where a flux rope is ejected from the solar corona. From the density and temperature of the plasma in the simulation we synthesise AIA observations. The emission is then integrated along the line of sight using the instrumental response function of AIA. Results: We sythesise observations of AIA in the channels at 304 Å, 171 Å, 335 Å, and 94 Å. The synthesised observations show a number of features similar to actual observations and in particular reproduce the general development of CMEs in the low corona as observed by AIA. In particular we reproduce an erupting and expanding arcade in the 304 Å and 171 Å channels with a high density core. Conclusions: The ejection of a flux rope reproduces many of the features found in the AIA observations. This work is therefore a step forward in bridging the gap between observations and models, and can lead to more direct interpretations of EUV observations in terms of flux rope ejections. We plan to improve the model in future studies in order to perform a more quantitative comparison. Movies associated with Figs. 3, 9, and 10 are available in electronic form at http://www.aanda.org
dc.format.extent10
dc.format.extent3015503
dc.language.isoeng
dc.relation.ispartofAstronomy & Astrophysicsen
dc.subjectSun: coronal mass ejections (CMEs)en
dc.subjectSun: UV radiationen
dc.subjectSun: filaments, prominencesen
dc.subjectSun: coronaen
dc.subjectSun: magnetic fieldsen
dc.subjectMagnetohydrodynamics (MHD)en
dc.subjectQA Mathematicsen
dc.subjectQB Astronomyen
dc.subject.lccQAen
dc.subject.lccQBen
dc.titleSimulating AIA observations of a flux rope ejectionen
dc.typeJournal articleen
dc.contributor.sponsorThe Leverhulme Trusten
dc.contributor.sponsorEuropean Commissionen
dc.contributor.institutionUniversity of St Andrews. Applied Mathematicsen
dc.identifier.doi10.1051/0004-6361/201424019
dc.description.statusPeer revieweden
dc.identifier.grantnumberRPG-305en
dc.identifier.grantnumber263340en


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