A NANOFLARE-BASED CELLULAR AUTOMATON MODEL and the OBSERVED PROPERTIES of the CORONAL PLASMA

We use the cellular automaton model described in López Fuentes & Klimchuk to study the evolution of coronal loop plasmas. The model, based on the idea of a critical misalignment angle in tangled magnetic fields, produces nanoflares of varying frequency with respect to the plasma cooling time. We...

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Detalles Bibliográficos
Autores principales:	Fuentes, M.L., Klimchuk, J.A.
Formato:	JOUR
Materias:	Sun: activity Sun: corona Sun: magnetic fields Sun: X-rays, gamma rays
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_0004637X_v828_n2_p_Fuentes
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_0004637X_v828_n2_p_Fuentes
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spelling	todo:paper_0004637X_v828_n2_p_Fuentes2023-10-03T14:02:41Z A NANOFLARE-BASED CELLULAR AUTOMATON MODEL and the OBSERVED PROPERTIES of the CORONAL PLASMA Fuentes, M.L. Klimchuk, J.A. Sun: activity Sun: corona Sun: magnetic fields Sun: X-rays, gamma rays We use the cellular automaton model described in López Fuentes & Klimchuk to study the evolution of coronal loop plasmas. The model, based on the idea of a critical misalignment angle in tangled magnetic fields, produces nanoflares of varying frequency with respect to the plasma cooling time. We compare the results of the model with active region (AR) observations obtained with the Hinode/XRT and SDO/AIA instruments. The comparison is based on the statistical properties of synthetic and observed loop light curves. Our results show that the model reproduces the main observational characteristics of the evolution of the plasma in AR coronal loops. The typical intensity fluctuations have amplitudes of 10%-15% both for the model and the observations. The sign of the skewness of the intensity distributions indicates the presence of cooling plasma in the loops. We also study the emission measure (EM) distribution predicted by the model and obtain slopes in log(EM) versus log(T) between 2.7 and 4.3, in agreement with published observational values. © 2016. 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_v828_n2_p_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 Sun: X-rays, gamma rays
spellingShingle	Sun: activity Sun: corona Sun: magnetic fields Sun: X-rays, gamma rays Fuentes, M.L. Klimchuk, J.A. A NANOFLARE-BASED CELLULAR AUTOMATON MODEL and the OBSERVED PROPERTIES of the CORONAL PLASMA
topic_facet	Sun: activity Sun: corona Sun: magnetic fields Sun: X-rays, gamma rays
description	We use the cellular automaton model described in López Fuentes & Klimchuk to study the evolution of coronal loop plasmas. The model, based on the idea of a critical misalignment angle in tangled magnetic fields, produces nanoflares of varying frequency with respect to the plasma cooling time. We compare the results of the model with active region (AR) observations obtained with the Hinode/XRT and SDO/AIA instruments. The comparison is based on the statistical properties of synthetic and observed loop light curves. Our results show that the model reproduces the main observational characteristics of the evolution of the plasma in AR coronal loops. The typical intensity fluctuations have amplitudes of 10%-15% both for the model and the observations. The sign of the skewness of the intensity distributions indicates the presence of cooling plasma in the loops. We also study the emission measure (EM) distribution predicted by the model and obtain slopes in log(EM) versus log(T) between 2.7 and 4.3, in agreement with published observational values. © 2016. The American Astronomical Society. All rights reserved..
format	JOUR
author	Fuentes, M.L. Klimchuk, J.A.
author_facet	Fuentes, M.L. Klimchuk, J.A.
author_sort	Fuentes, M.L.
title	A NANOFLARE-BASED CELLULAR AUTOMATON MODEL and the OBSERVED PROPERTIES of the CORONAL PLASMA
title_short	A NANOFLARE-BASED CELLULAR AUTOMATON MODEL and the OBSERVED PROPERTIES of the CORONAL PLASMA
title_full	A NANOFLARE-BASED CELLULAR AUTOMATON MODEL and the OBSERVED PROPERTIES of the CORONAL PLASMA
title_fullStr	A NANOFLARE-BASED CELLULAR AUTOMATON MODEL and the OBSERVED PROPERTIES of the CORONAL PLASMA
title_full_unstemmed	A NANOFLARE-BASED CELLULAR AUTOMATON MODEL and the OBSERVED PROPERTIES of the CORONAL PLASMA
title_sort	nanoflare-based cellular automaton model and the observed properties of the coronal plasma
url	http://hdl.handle.net/20.500.12110/paper_0004637X_v828_n2_p_Fuentes
work_keys_str_mv	AT fuentesml ananoflarebasedcellularautomatonmodelandtheobservedpropertiesofthecoronalplasma AT klimchukja ananoflarebasedcellularautomatonmodelandtheobservedpropertiesofthecoronalplasma AT fuentesml nanoflarebasedcellularautomatonmodelandtheobservedpropertiesofthecoronalplasma AT klimchukja nanoflarebasedcellularautomatonmodelandtheobservedpropertiesofthecoronalplasma
_version_	1807318939056734208

A NANOFLARE-BASED CELLULAR AUTOMATON MODEL and the OBSERVED PROPERTIES of the CORONAL PLASMA

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