A cellular automaton model for coronal heating

We present a simple coronal heating model based on a cellular automaton approach. Following Parker's suggestion (1988), we consider the corona to be made up of elemental magnetic strands that accumulate magnetic stress due to the photospheric displacements of their footpoints. Magnetic energy i...

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Detalles Bibliográficos
Publicado: 2011
Materias:
Sun: activity
Sun: corona
Sun: magnetic fields
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17439213_v7_nS286_p433_Fuentes
http://hdl.handle.net/20.500.12110/paper_17439213_v7_nS286_p433_Fuentes
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_17439213_v7_nS286_p433_Fuentes
record_format dspace
spelling paper:paper_17439213_v7_nS286_p433_Fuentes2023-06-08T16:28:08Z A cellular automaton model for coronal heating Sun: activity Sun: corona Sun: magnetic fields We present a simple coronal heating model based on a cellular automaton approach. Following Parker's suggestion (1988), we consider the corona to be made up of elemental magnetic strands that accumulate magnetic stress due to the photospheric displacements of their footpoints. Magnetic energy is eventually released in small scale reconnection events. The model consists of a 2D grid in which strand footpoints travel with random displacements simulating convective motions. Each time two strands interact, a critical condition is tested (as in self-organized critical models), and if the condition is fulfilled, the strands reconnect and energy is released. We model the plasma response to the heating events and obtain synthetic observations. We compare the output of the model with real observations from Hinode/XRT and discuss the implications of our results for coronal heating. © 2012 International Astronomical Union. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17439213_v7_nS286_p433_Fuentes http://hdl.handle.net/20.500.12110/paper_17439213_v7_nS286_p433_Fuentes
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: corona
Sun: magnetic fields
spellingShingle Sun: activity
Sun: corona
Sun: magnetic fields
A cellular automaton model for coronal heating
topic_facet Sun: activity
Sun: corona
Sun: magnetic fields
description We present a simple coronal heating model based on a cellular automaton approach. Following Parker's suggestion (1988), we consider the corona to be made up of elemental magnetic strands that accumulate magnetic stress due to the photospheric displacements of their footpoints. Magnetic energy is eventually released in small scale reconnection events. The model consists of a 2D grid in which strand footpoints travel with random displacements simulating convective motions. Each time two strands interact, a critical condition is tested (as in self-organized critical models), and if the condition is fulfilled, the strands reconnect and energy is released. We model the plasma response to the heating events and obtain synthetic observations. We compare the output of the model with real observations from Hinode/XRT and discuss the implications of our results for coronal heating. © 2012 International Astronomical Union.
title A cellular automaton model for coronal heating
title_short A cellular automaton model for coronal heating
title_full A cellular automaton model for coronal heating
title_fullStr A cellular automaton model for coronal heating
title_full_unstemmed A cellular automaton model for coronal heating
title_sort cellular automaton model for coronal heating
publishDate 2011
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17439213_v7_nS286_p433_Fuentes
http://hdl.handle.net/20.500.12110/paper_17439213_v7_nS286_p433_Fuentes
_version_ 1768544523264196608

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