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dc.contributor.author
Attrill, G. D. R.
dc.contributor.author
van Driel Gesztelyi, Lidia
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dc.contributor.author
Démoulin, Pascal
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dc.contributor.author
Zhukov, A. N.
dc.contributor.author
Steed, K.
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Harra, L. K.
dc.contributor.author
Mandrini, Cristina Hemilse
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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
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Magnetic Fields
dc.subject
Solar Corona
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Quiet Sun
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Sun: Coronal Mass Ejections
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Low Coronal Signatures
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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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
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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
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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
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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
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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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