The solar dynamo and its phase transitions during the last millennium

We analyze the variation of the solar-dynamo magnetic-field components during the last millennium through a study of their proxy data. We introduce a phase diagram with as abscissa and ordinate the proxies of the values of the toroidal and poloidal magnetic field components. In this diagram the dyna...

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Autor principal: Duhau de Romero, Silvia
Publicado: 2008
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00380938_v250_n1_p1_Duhau
http://hdl.handle.net/20.500.12110/paper_00380938_v250_n1_p1_Duhau
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00380938_v250_n1_p1_Duhau
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spelling paper:paper_00380938_v250_n1_p1_Duhau2023-06-08T15:02:42Z The solar dynamo and its phase transitions during the last millennium Duhau de Romero, Silvia We analyze the variation of the solar-dynamo magnetic-field components during the last millennium through a study of their proxy data. We introduce a phase diagram with as abscissa and ordinate the proxies of the values of the toroidal and poloidal magnetic field components. In this diagram the dynamo system appears to regularly cross a well-defined point, which we call the Transition Point. Such crossings occurred five times during the past millennium. Each of these crossings preceded a Grand Episode, either a Minimum or a Maximum one. In addition to these two types of quasiperiodic behavior, a third type consisting of weaker quasiregular oscillations (R) around the Transition Point's coordinates is identified. These periods appear to last one or two times the Gleissberg cycle length. Between the various types of episodes there are brief phase transitions. We identify two types of such phase transitions. © 2008 Springer Science+Business Media B.V. Fil:Duhau, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00380938_v250_n1_p1_Duhau http://hdl.handle.net/20.500.12110/paper_00380938_v250_n1_p1_Duhau
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 analyze the variation of the solar-dynamo magnetic-field components during the last millennium through a study of their proxy data. We introduce a phase diagram with as abscissa and ordinate the proxies of the values of the toroidal and poloidal magnetic field components. In this diagram the dynamo system appears to regularly cross a well-defined point, which we call the Transition Point. Such crossings occurred five times during the past millennium. Each of these crossings preceded a Grand Episode, either a Minimum or a Maximum one. In addition to these two types of quasiperiodic behavior, a third type consisting of weaker quasiregular oscillations (R) around the Transition Point's coordinates is identified. These periods appear to last one or two times the Gleissberg cycle length. Between the various types of episodes there are brief phase transitions. We identify two types of such phase transitions. © 2008 Springer Science+Business Media B.V.
author Duhau de Romero, Silvia
spellingShingle Duhau de Romero, Silvia
The solar dynamo and its phase transitions during the last millennium
author_facet Duhau de Romero, Silvia
author_sort Duhau de Romero, Silvia
title The solar dynamo and its phase transitions during the last millennium
title_short The solar dynamo and its phase transitions during the last millennium
title_full The solar dynamo and its phase transitions during the last millennium
title_fullStr The solar dynamo and its phase transitions during the last millennium
title_full_unstemmed The solar dynamo and its phase transitions during the last millennium
title_sort solar dynamo and its phase transitions during the last millennium
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00380938_v250_n1_p1_Duhau
http://hdl.handle.net/20.500.12110/paper_00380938_v250_n1_p1_Duhau
work_keys_str_mv AT duhauderomerosilvia thesolardynamoanditsphasetransitionsduringthelastmillennium
AT duhauderomerosilvia solardynamoanditsphasetransitionsduringthelastmillennium
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