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dc.contributor.author
Steed, K.
dc.contributor.author
Owen, C. J.
dc.contributor.author
Harra, L. K.
dc.contributor.author
Green, L. M.
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Dasso, Sergio Ricardo
dc.contributor.author
Walsh, A. P.
dc.contributor.author
Démoulin, Pascal
dc.contributor.author
van Driel Gesztelyi, Lidia
dc.date.available
2017-07-17T18:18:50Z
dc.date.issued
2008-12
dc.identifier.citation
Steed, K.; Owen, C. J.; Harra, L. K.; Green, L. M.; Dasso, Sergio Ricardo; et al.; Locating the solar source of 13 April 2006 magnetic cloud; Copernicus Publications; Annales Geophysicae; 26; 12-2008; 3159-3168
dc.identifier.issn
0992-7689
dc.identifier.uri
http://hdl.handle.net/11336/20711
dc.description.abstract
Using Advanced Composition Explorer (ACE) in situ data we identify and describe an interplanetary magnetic cloud (MC) observed near Earth on 13 April 2006. We also use multi-instrument and multi-wavelength observations from the Solar and Heliospheric Observatory (SOHO), the Transition Region and Coronal Explorer (TRACE) and ground-based solar observatories to determine the solar source of this magnetic cloud. A launch window for the MC between 9 and 11 April 2006 was estimated from the propagation time of the ejecta observed near Earth. A number of large active regions (ARs) were present on the Sun during this period, which were initially considered to be the most likely candidate source regions of the MC. However, it was determined that the solar source of the MC was a small, spotless active region observed in the Northern Hemisphere. Following an eruption from this region on 11 April 2006, the ACE spacecraft detected, 59 h later, the passage of the MC, preceded by the arrival of a weak, forward fast shock. The link between the eruption in this active region and the interplanetary MC is supported by several pieces of evidence, including the location of the solar source near to the disk centre and to the east of the central meridian (in agreement with the spacecraft trajectory through the western leg of the magnetic cloud), the propagation time of the ejecta, the agreement between the amount of flux in the magnetic cloud and in the active region, and the agreement between the signs of helicity of the magnetic cloud and the active region (which differs from the sign of helicity of each of the other active regions on the Sun at this time). In addition, the active region is located on the boundary of a coronal hole, and a high speed solar wind stream originating from this region is observed near Earth shortly after the passage of the magnetic cloud.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Copernicus Publications
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Locating the solar source of 13 April 2006 magnetic cloud
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-17T13:32:51Z
dc.identifier.eissn
1432-0576
dc.journal.volume
26
dc.journal.pagination
3159-3168
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Steed, K.. University College London; Estados Unidos
dc.description.fil
Fil: Owen, C. J.. University College London; Estados Unidos
dc.description.fil
Fil: Harra, L. K.. University College London; Estados Unidos
dc.description.fil
Fil: Green, L. M.. University College London; Estados Unidos
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: Walsh, A. P.. University College London; Estados Unidos
dc.description.fil
Fil: Démoulin, Pascal. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
dc.description.fil
Fil: van Driel Gesztelyi, Lidia. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
dc.journal.title
Annales Geophysicae
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.ann-geophys.net/26/3159/2008/
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.5194/angeo-26-3159-2008
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