Study of bi-orthogonal modes in magnetic butterflies

We present a bi-orthogonal decomposition of the temporal and latitudinal distribution of solar magnetic fields from synoptic magnetograms. Results are compared with a similar decomposition of the distribution of sunspots since 1874. We show that the butterfly diagrams can be interpreted as the resul...

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Publicado: 2004
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00380938_v219_n2_p367_Mininni
http://hdl.handle.net/20.500.12110/paper_00380938_v219_n2_p367_Mininni
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00380938_v219_n2_p367_Mininni
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spelling paper:paper_00380938_v219_n2_p367_Mininni2023-06-08T15:02:37Z Study of bi-orthogonal modes in magnetic butterflies We present a bi-orthogonal decomposition of the temporal and latitudinal distribution of solar magnetic fields from synoptic magnetograms. Results are compared with a similar decomposition of the distribution of sunspots since 1874. We show that the butterfly diagrams can be interpreted as the result of approximately constant amplitudes and phases of two oscillations with periods close to 22 years. A clear periodicity of 7 years can also be identified in the most energetic modes of both spatio-temporal series. These results can be used to obtain relevant information concerning the physics of the solar dynamo. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00380938_v219_n2_p367_Mininni http://hdl.handle.net/20.500.12110/paper_00380938_v219_n2_p367_Mininni
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We present a bi-orthogonal decomposition of the temporal and latitudinal distribution of solar magnetic fields from synoptic magnetograms. Results are compared with a similar decomposition of the distribution of sunspots since 1874. We show that the butterfly diagrams can be interpreted as the result of approximately constant amplitudes and phases of two oscillations with periods close to 22 years. A clear periodicity of 7 years can also be identified in the most energetic modes of both spatio-temporal series. These results can be used to obtain relevant information concerning the physics of the solar dynamo.
title Study of bi-orthogonal modes in magnetic butterflies
spellingShingle Study of bi-orthogonal modes in magnetic butterflies
title_short Study of bi-orthogonal modes in magnetic butterflies
title_full Study of bi-orthogonal modes in magnetic butterflies
title_fullStr Study of bi-orthogonal modes in magnetic butterflies
title_full_unstemmed Study of bi-orthogonal modes in magnetic butterflies
title_sort study of bi-orthogonal modes in magnetic butterflies
publishDate 2004
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00380938_v219_n2_p367_Mininni
http://hdl.handle.net/20.500.12110/paper_00380938_v219_n2_p367_Mininni
_version_ 1768543316169719808

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