A simple model for the evolution of multi-stranded coronal loops

We develop and analyze a simple cellular automaton model that reproduces the main properties of the evolution of soft X-ray coronal loops. We are motivated by the observation that these loops evolve in three distinguishable phases that suggest the development, maintenance, and decay of a self-organi...

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Autores principales:	López Fuentes, M.C., Klimchuk, J.A.
Formato:	JOUR
Materias:	Sun: Corona Sun: Flares Sun: Magnetic topology Sun: X-rays gamma rays
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_0004637X_v719_n1_p591_LopezFuentes
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_0004637X_v719_n1_p591_LopezFuentes
record_format	dspace
spelling	todo:paper_0004637X_v719_n1_p591_LopezFuentes2023-10-03T14:02:12Z A simple model for the evolution of multi-stranded coronal loops López Fuentes, M.C. Klimchuk, J.A. Sun: Corona Sun: Flares Sun: Magnetic topology Sun: X-rays gamma rays We develop and analyze a simple cellular automaton model that reproduces the main properties of the evolution of soft X-ray coronal loops. We are motivated by the observation that these loops evolve in three distinguishable phases that suggest the development, maintenance, and decay of a self-organized system. The model is based on the idea that loops are made of elemental strands that are heated by the relaxation of magnetic stress in the form of nanoflares. In this vision, usually called the "Parker conjecture," the origin of stress is the displacement of the strand footpoints due to photospheric convective motions. Modeling the response and evolution of the plasma we obtain synthetic light curves that have the same characteristic properties (intensity, fluctuations, and timescales) as the observed cases.We study the dependence of these properties on the model parameters and find scaling laws that can be used as observational predictions of the model. We discuss the implications of our results for the interpretation of recent loop observations in different wavelengths. © 2010. The American Astronomical Society. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0004637X_v719_n1_p591_LopezFuentes
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: Corona Sun: Flares Sun: Magnetic topology Sun: X-rays gamma rays
spellingShingle	Sun: Corona Sun: Flares Sun: Magnetic topology Sun: X-rays gamma rays López Fuentes, M.C. Klimchuk, J.A. A simple model for the evolution of multi-stranded coronal loops
topic_facet	Sun: Corona Sun: Flares Sun: Magnetic topology Sun: X-rays gamma rays
description	We develop and analyze a simple cellular automaton model that reproduces the main properties of the evolution of soft X-ray coronal loops. We are motivated by the observation that these loops evolve in three distinguishable phases that suggest the development, maintenance, and decay of a self-organized system. The model is based on the idea that loops are made of elemental strands that are heated by the relaxation of magnetic stress in the form of nanoflares. In this vision, usually called the "Parker conjecture," the origin of stress is the displacement of the strand footpoints due to photospheric convective motions. Modeling the response and evolution of the plasma we obtain synthetic light curves that have the same characteristic properties (intensity, fluctuations, and timescales) as the observed cases.We study the dependence of these properties on the model parameters and find scaling laws that can be used as observational predictions of the model. We discuss the implications of our results for the interpretation of recent loop observations in different wavelengths. © 2010. The American Astronomical Society. All rights reserved.
format	JOUR
author	López Fuentes, M.C. Klimchuk, J.A.
author_facet	López Fuentes, M.C. Klimchuk, J.A.
author_sort	López Fuentes, M.C.
title	A simple model for the evolution of multi-stranded coronal loops
title_short	A simple model for the evolution of multi-stranded coronal loops
title_full	A simple model for the evolution of multi-stranded coronal loops
title_fullStr	A simple model for the evolution of multi-stranded coronal loops
title_full_unstemmed	A simple model for the evolution of multi-stranded coronal loops
title_sort	simple model for the evolution of multi-stranded coronal loops
url	http://hdl.handle.net/20.500.12110/paper_0004637X_v719_n1_p591_LopezFuentes
work_keys_str_mv	AT lopezfuentesmc asimplemodelfortheevolutionofmultistrandedcoronalloops AT klimchukja asimplemodelfortheevolutionofmultistrandedcoronalloops AT lopezfuentesmc simplemodelfortheevolutionofmultistrandedcoronalloops AT klimchukja simplemodelfortheevolutionofmultistrandedcoronalloops
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A simple model for the evolution of multi-stranded coronal loops

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