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Title

Magnetic Flux Emergence in a Coronal Hole

AuthorsPalacios, Judith; Utz, Dominik; Hofmeister, Stefan; Krikova, Kilian; Gömöry, Peter; Kuckein, Christoph; Denker, Carsten; Verma, Meetu; González Manrique, Sergio Javier; Campos Rozo, Jose Iván; Koza, Július; Temmer, Manuela; Veronig, Astrid; Diercke, Andrea; Kontogiannis, Ioannis; Cid, Consuelo
KeywordsCoronal holes
Magnetic fields
Photosphere
Solar Wind
Disturbances
Magnetosphere
Geomagnetic disturbances
Issue Date2020
PublisherSpringer Nature
CitationSolar Physics 295(5): 64 (2020)
AbstractA joint campaign of various space-borne and ground-based observatories, comprising the Japanese Hinode mission (Hinode Observing Plan 338, 20 - 30 September 2017), the GREGOR solar telescope, and the Vacuum Tower Telescope (VTT), investigated numerous targets such as pores, sunspots, and coronal holes. In this study, we focus on the coronal hole region target. On 24 September 2017, a very extended non-polar coronal hole developed patches of flux emergence, which contributed to the decrease of the overall area of the coronal hole. These flux emergence patches erode the coronal hole and transform the area into a more quiet-Sun-like area, whereby bipolar magnetic structures play an important role. Conversely, flux cancellation leads to the reduction of opposite-polarity magnetic fields and to an increase in the area of the coronal hole.© 2020 Springer Nature Switzerland AG. Part of Springer Nature.
Publisher version (URL)http://dx.doi.org/10.1007/s11207-020-01629-9
URIhttp://hdl.handle.net/10261/214188
DOI10.1007/s11207-020-01629-9
ISSN0038-0938
Appears in Collections:(IAA) Artículos
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