Evolution of a very complex active region during the decay phase of Cycle 23

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We study the emergence and evolution of AR NOAA 10314, observed on the solar disk during March 13-19, 2003. This extremely complex AR is of particular interest due to its unusual magnetic flux distribution and the clear rotation of the polarities of a d-spot within the AR. Using SOHO/MDI magnetogram...

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Autores principales:	Poisson, M., Fuentes, M.L., Mandrini, C.H., Démoulin, P., Pariat, E.
Formato:	SER
Materias:	Sun: magnetic fields Sun: photosphere
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_17439213_v7_nS286_p246_Poisson
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_17439213_v7_nS286_p246_Poisson
record_format	dspace
spelling	todo:paper_17439213_v7_nS286_p246_Poisson2023-10-03T16:31:40Z Evolution of a very complex active region during the decay phase of Cycle 23 Poisson, M. Fuentes, M.L. Mandrini, C.H. Démoulin, P. Pariat, E. Sun: magnetic fields Sun: photosphere We study the emergence and evolution of AR NOAA 10314, observed on the solar disk during March 13-19, 2003. This extremely complex AR is of particular interest due to its unusual magnetic flux distribution and the clear rotation of the polarities of a d-spot within the AR. Using SOHO/MDI magnetograms we follow the evolution of the photospheric magnetic flux to infer the morphology of the structure that originates the AR. We determine the tilt angle variation for the d-spot and find a counter-clockwise rotation corresponding to a positive writhed flux tube. We compute the magnetic helicity injection and the total accumulated helicity in the AR and find a correlation with the observed rotation. © 2012 International Astronomical Union. Fil:Poisson, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mandrini, C.H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. SER info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_17439213_v7_nS286_p246_Poisson
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Sun: magnetic fields Sun: photosphere
spellingShingle	Sun: magnetic fields Sun: photosphere Poisson, M. Fuentes, M.L. Mandrini, C.H. Démoulin, P. Pariat, E. Evolution of a very complex active region during the decay phase of Cycle 23
topic_facet	Sun: magnetic fields Sun: photosphere
description	We study the emergence and evolution of AR NOAA 10314, observed on the solar disk during March 13-19, 2003. This extremely complex AR is of particular interest due to its unusual magnetic flux distribution and the clear rotation of the polarities of a d-spot within the AR. Using SOHO/MDI magnetograms we follow the evolution of the photospheric magnetic flux to infer the morphology of the structure that originates the AR. We determine the tilt angle variation for the d-spot and find a counter-clockwise rotation corresponding to a positive writhed flux tube. We compute the magnetic helicity injection and the total accumulated helicity in the AR and find a correlation with the observed rotation. © 2012 International Astronomical Union.
format	SER
author	Poisson, M. Fuentes, M.L. Mandrini, C.H. Démoulin, P. Pariat, E.
author_facet	Poisson, M. Fuentes, M.L. Mandrini, C.H. Démoulin, P. Pariat, E.
author_sort	Poisson, M.
title	Evolution of a very complex active region during the decay phase of Cycle 23
title_short	Evolution of a very complex active region during the decay phase of Cycle 23
title_full	Evolution of a very complex active region during the decay phase of Cycle 23
title_fullStr	Evolution of a very complex active region during the decay phase of Cycle 23
title_full_unstemmed	Evolution of a very complex active region during the decay phase of Cycle 23
title_sort	evolution of a very complex active region during the decay phase of cycle 23
url	http://hdl.handle.net/20.500.12110/paper_17439213_v7_nS286_p246_Poisson
work_keys_str_mv	AT poissonm evolutionofaverycomplexactiveregionduringthedecayphaseofcycle23 AT fuentesml evolutionofaverycomplexactiveregionduringthedecayphaseofcycle23 AT mandrinich evolutionofaverycomplexactiveregionduringthedecayphaseofcycle23 AT demoulinp evolutionofaverycomplexactiveregionduringthedecayphaseofcycle23 AT pariate evolutionofaverycomplexactiveregionduringthedecayphaseofcycle23
_version_	1782025136736567296

Evolution of a very complex active region during the decay phase of Cycle 23

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