A new imminent grand minimum?

The planetary hypothesis of solar cycle is an old idea by which the planetary gravity acting on the Sun might have a non-negligible effect on the solar magnetic cycle. The advance of this hypothesis is based on phenomenological correlations between dynamical parameters of the Sun's movement aro...

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Detalles Bibliográficos
Autor principal: Compagnucci, Rosa Hilda
Publicado: 2011
Materias:
Sun: activity - Sun: interior
sunspots
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17439213_v7_nS286_p414_Cionco
http://hdl.handle.net/20.500.12110/paper_17439213_v7_nS286_p414_Cionco
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_17439213_v7_nS286_p414_Cionco
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spelling paper:paper_17439213_v7_nS286_p414_Cionco2023-06-08T16:28:08Z A new imminent grand minimum? Compagnucci, Rosa Hilda Sun: activity - Sun: interior sunspots The planetary hypothesis of solar cycle is an old idea by which the planetary gravity acting on the Sun might have a non-negligible effect on the solar magnetic cycle. The advance of this hypothesis is based on phenomenological correlations between dynamical parameters of the Sun's movement around the barycenter of the Solar System and sunspots time series. In addition, several authors have proposed, using different methodologies that the first Grand Minima (GM) event of the new millennium is coming or has already begun. We present new fully three dimensional N-body simulations of the solar inertial motion (SIM) around the barycentre of the solar system in order to perform a phenomenological comparison between relevant SIM dynamical parameters and the occurrences of the last GM events (i.e., Maunder and Dalton). Our fundamental result is that the Sun acceleration decomposed in a co-orbital reference system shows a very particular behaviour that is common to Maunder minimum, Dalton minimum and the maximum of cycle 22 (around 1990), before the present prolonged minimum. We discuss our results in terms of a dynamical characterization of GM with relation to Sun dynamics and possible implications for a new GM event. © 2012 International Astronomical Union. Fil:Compagnucci, R.H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17439213_v7_nS286_p414_Cionco http://hdl.handle.net/20.500.12110/paper_17439213_v7_nS286_p414_Cionco
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: activity - Sun: interior
sunspots
spellingShingle Sun: activity - Sun: interior
sunspots
Compagnucci, Rosa Hilda
A new imminent grand minimum?
topic_facet Sun: activity - Sun: interior
sunspots
description The planetary hypothesis of solar cycle is an old idea by which the planetary gravity acting on the Sun might have a non-negligible effect on the solar magnetic cycle. The advance of this hypothesis is based on phenomenological correlations between dynamical parameters of the Sun's movement around the barycenter of the Solar System and sunspots time series. In addition, several authors have proposed, using different methodologies that the first Grand Minima (GM) event of the new millennium is coming or has already begun. We present new fully three dimensional N-body simulations of the solar inertial motion (SIM) around the barycentre of the solar system in order to perform a phenomenological comparison between relevant SIM dynamical parameters and the occurrences of the last GM events (i.e., Maunder and Dalton). Our fundamental result is that the Sun acceleration decomposed in a co-orbital reference system shows a very particular behaviour that is common to Maunder minimum, Dalton minimum and the maximum of cycle 22 (around 1990), before the present prolonged minimum. We discuss our results in terms of a dynamical characterization of GM with relation to Sun dynamics and possible implications for a new GM event. © 2012 International Astronomical Union.
author Compagnucci, Rosa Hilda
author_facet Compagnucci, Rosa Hilda
author_sort Compagnucci, Rosa Hilda
title A new imminent grand minimum?
title_short A new imminent grand minimum?
title_full A new imminent grand minimum?
title_fullStr A new imminent grand minimum?
title_full_unstemmed A new imminent grand minimum?
title_sort new imminent grand minimum?
publishDate 2011
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17439213_v7_nS286_p414_Cionco
http://hdl.handle.net/20.500.12110/paper_17439213_v7_nS286_p414_Cionco
work_keys_str_mv AT compagnuccirosahilda anewimminentgrandminimum
AT compagnuccirosahilda newimminentgrandminimum
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