منابع مشابه
The Solar Wind
. ~ydrodyn~mic expansion of the solar corona is the basis for "solar corpusc ular radiatIOn . The qUiet day coronal temperatures of 1 to 2X 106 OK yield a solar wind of several h';lDdred km/sec and a density of 5 to 50 particles/cm3 at the orbit of Earth. The solar ~lVllld draws out m to spa~e t he. lines of fore.e of t he gen eral one-gauss solar field, to give an Il1terplanetary fi eld t hat ...
متن کاملComposition of the Solar Wind
Introduction: The solar wind reflects the composition of the Sun and physical processes in the corona. Analysis produces information on how the solar system was formed and on physical processes in the co-rona. The analysis can also produce information on the local interstellar medium, galactic evolution, comets in the solar wind, dust in the heliosphere, and matter escaping from planets. Histor...
متن کاملViscosity in the Solar Wind
The effects of viscosity on a steady, radial, spherically symmetric solar wind with an embedded, non-radial magnetic field are reconsidered. The correct expression for the classical viscosity in the presence of a non-radial magnetic field is shown to be different from that used in the past, and a means of describing non-classical viscosity is presented. A physical interpretation of the classica...
متن کاملOn the Slow Solar Wind
A theory for the origin of the slow solar wind is described. Recent papers have demonstrated that magnetic flux moves across coronal holes as a result of the interplay between the differential rotation of the photosphere and the non-radial expansion of the solar wind in more rigidly rotating coronal holes. This flux will be deposited at low latitudes and should reconnect with closed magnetic lo...
متن کاملThe distribution of solar wind speeds during solar minimum: Calibration for numerical solar wind modeling constraints on the source of the slow solar wind
[1] It took the solar polar passage of Ulysses in the early 1990s to establish the global structure of the solar wind speed during solar minimum. However, it remains unclear if the solar wind is composed of two distinct populations of solar wind from different sources (e.g., closed loops which open up to produce the slow solar wind) or if the fast and slow solar wind rely on the superradial exp...
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ژورنال
عنوان ژورنال: Nature
سال: 2003
ISSN: 0028-0836
DOI: 10.1038/421894a