Titre du document

Solar wind and interplanetary magnetic field

Lien vers le document
Nom du Corpus

AstroConcepts

Auteur(s)
  • A. J. Dessler
Résumé

A brief history is presented of some of our ideas regarding the solar wind. The basic physical principles of supersonic expansion are discussed. An analogy is drawn with the flow of an ideal gas through a rocket?engine nozzle. Supersonic expansion of a stellar corona requires a stellar and coronal temperature lower than a specified maximum. For temperatures above this maximum, subsonic expansion should result. The thermal structure of the sun is such that only supersonic expanion occurs although subsonic expansion is, in principal, allowed. The present status of relevant experiments and theory regarding the solar wind and interplanetary magnetic field is discussed. In particular, attention is drawn to a comparison between theoretical predictions and actual measurements. It is concluded that measurements are consistent with theory for the component of field projected on the ecliptic plane. However, a serious discrepancy is noted between theory and experiment with regard to a possible component perpendicular to the sun's equatorial plane. Wave motion in the solar wind is discussed briefly. It is shown that, under certain conditions, relative wave amplitudes should grow with increasing heliocentric distance. Finally, ideas concerning the ultimate fate of the supersonic solar wind are reviewed.

Langue(s) du document
Anglais
Année de publication
1967
Revue

Reviews of Geophysics

Éditeur
Wiley
Type de publication
journal
Type de document
review-article
Présence de XML structuré
Non
Version de PDF
1.2
Score de qualité du texte
9.34
Nom du concept
  • Heliosphere
Catégories Science-Metrix
  • 1 - natural sciences ; 2 - earth & environmental sciences ; 3 - meteorology & atmospheric sciences
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Earth and Planetary Sciences ; 3 - Geophysics
Catégories WoS
  • 1 - science ; 2 - geochemistry & geophysics
Identifiant ISTEX
A85370ECAD6E1374130228EA8367E757F4BB7D02
ark:/67375/WNG-7KW3Q1PD-9
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