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dc.contributor.author Attrill, G. D. R.
dc.contributor.author van Driel Gesztelyi, Lidia
dc.contributor.author Démoulin, Pascal
dc.contributor.author Zhukov, A. N.
dc.contributor.author Steed, K.
dc.contributor.author Harra, L. K.
dc.contributor.author Mandrini, Cristina Hemilse
dc.contributor.author Linker, J.
dc.date.available 2017-07-17T18:09:50Z
dc.date.issued 2008-11
dc.identifier.citation Attrill, G. D. R.; van Driel Gesztelyi, Lidia; Démoulin, Pascal; Zhukov, A. N.; Steed, K.; et al.; The Recovery of CME-Related Dimmings and the ICME's Enduring Magnetic Connection to the Sun; Springer; Solar Physics; 252; 2; 11-2008; 349-372
dc.identifier.issn 0038-0938
dc.identifier.uri http://hdl.handle.net/11336/20709
dc.description.abstract It is generally accepted that transient coronal holes (TCHs, dimmings) correspond to the magnetic footpoints of CMEs that remain rooted in the Sun as the CME expands out into the interplanetary space. However, the observation that the average intensity of the 12 May 1997 dimmings recover to their pre-eruption intensity in SOHO/EIT data within 48 hours, whilst suprathermal unidirectional electron heat fluxes are observed at 1 AU in the related ICME more than 70 hours after the eruption, leads us to question why and how the dimmings disappear whilst the magnetic connectivity is maintained. We also examine two other CME-related dimming events: 13 May 2005 and 6 July 2006. We study the morphology of the dimmings and how they recover. We find that, far from exhibiting a uniform intensity, dimmings observed in SOHO/EIT data have a deep central core and a more shallow extended dimming area. The dimmings recover not only by shrinking of their outer boundaries but also by internal brightenings. We quantitatively demonstrate that the model developed by Fisk and Schwadron ( Astrophys. J. 560, 425, 2001) of interchange reconnections between “open” magnetic field and small coronal loops is a strong candidate for the mechanism facilitating the recovery of the dimmings. This process disperses the concentration of “open” magnetic field (forming the dimming) out into the surrounding quiet Sun, thus recovering the intensity of the dimmings whilst still maintaining the magnetic connectivity to the Sun.
dc.format application/pdf
dc.language.iso eng
dc.publisher Springer
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject MAGNETIC FIELDS
dc.subject SOLAR CORONA
dc.subject QUIET SUN
dc.subject SUN: CORONAL MASS EJECTIONS
dc.subject LOW CORONAL SIGNATURES
dc.subject.classification Astronomía
dc.subject.classification Ciencias Físicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title The Recovery of CME-Related Dimmings and the ICME's Enduring Magnetic Connection to the Sun
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2017-07-17T13:33:13Z
dc.journal.volume 252
dc.journal.number 2
dc.journal.pagination 349-372
dc.journal.pais Alemania
dc.journal.ciudad Berlin
dc.description.fil Fil: Attrill, G. D. R.. University College London; Estados Unidos
dc.description.fil Fil: van Driel Gesztelyi, Lidia. 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: Zhukov, A. N.. Royal Observatory of Belgium; Bélgica
dc.description.fil Fil: Steed, K.. University College London; Estados Unidos
dc.description.fil Fil: Harra, L. K.. University College London; Estados Unidos
dc.description.fil Fil: Mandrini, Cristina Hemilse. 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: Linker, J.. Science Applications International Corporation; Estados Unidos
dc.journal.title Solar Physics
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s11207-008-9255-z
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs11207-008-9255-z


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)