Nonlocal heat transport in the solar wind

It is shown that a nonlocal, suprathermal tail originated near the solar corona base dominates the conductive energy flux at distances r ≥: 2 R ⊙ . A nonlocal analytical expression for the electron heat flux in weakly collisional plasmas is derived by solving the Fokker-Planck equation...

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Guardado en:
Detalles Bibliográficos
Publicado: 1996
Materias:
Solar wind
Sun: corona
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v462_n2PARTI_p1005_Canullo
http://hdl.handle.net/20.500.12110/paper_0004637X_v462_n2PARTI_p1005_Canullo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_0004637X_v462_n2PARTI_p1005_Canullo
record_format dspace
spelling paper:paper_0004637X_v462_n2PARTI_p1005_Canullo2023-06-08T14:28:36Z Nonlocal heat transport in the solar wind Solar wind Sun: corona It is shown that a nonlocal, suprathermal tail originated near the solar corona base dominates the conductive energy flux at distances r ≥: 2 R ⊙ . A nonlocal analytical expression for the electron heat flux in weakly collisional plasmas is derived by solving the Fokker-Planck equation in a narrow, tail energy range. A correction to the anisotropy of the distribution function due to the divergent magnetic field lines was included. This term is essential to recover from the delocalization prescription, in the limit r ≥ 6 R ⊙ , the well-known Hollweg's Ansatz for the "collisionless" heat flux. In the intermediate region 2 R ȯ r ≤ 6 R ⊙ , the nonlocal convolution smoothly interpolates between the classical Spitzer-Härm's formula and the so-called collisionless régime. © 1996. The American Astronomical Society. All rights reserved. 1996 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v462_n2PARTI_p1005_Canullo http://hdl.handle.net/20.500.12110/paper_0004637X_v462_n2PARTI_p1005_Canullo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Solar wind
Sun: corona
spellingShingle Solar wind
Sun: corona
Nonlocal heat transport in the solar wind
topic_facet Solar wind
Sun: corona
description It is shown that a nonlocal, suprathermal tail originated near the solar corona base dominates the conductive energy flux at distances r ≥: 2 R ⊙ . A nonlocal analytical expression for the electron heat flux in weakly collisional plasmas is derived by solving the Fokker-Planck equation in a narrow, tail energy range. A correction to the anisotropy of the distribution function due to the divergent magnetic field lines was included. This term is essential to recover from the delocalization prescription, in the limit r ≥ 6 R ⊙ , the well-known Hollweg's Ansatz for the "collisionless" heat flux. In the intermediate region 2 R ȯ r ≤ 6 R ⊙ , the nonlocal convolution smoothly interpolates between the classical Spitzer-Härm's formula and the so-called collisionless régime. © 1996. The American Astronomical Society. All rights reserved.
title Nonlocal heat transport in the solar wind
title_short Nonlocal heat transport in the solar wind
title_full Nonlocal heat transport in the solar wind
title_fullStr Nonlocal heat transport in the solar wind
title_full_unstemmed Nonlocal heat transport in the solar wind
title_sort nonlocal heat transport in the solar wind
publishDate 1996
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v462_n2PARTI_p1005_Canullo
http://hdl.handle.net/20.500.12110/paper_0004637X_v462_n2PARTI_p1005_Canullo
_version_ 1768545168980443136

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