The Solar Corona

descriptionPublicationkeyboard_double_arrow_right Part of book or chapter of book , Other literature type 01 Jan 2003Publisher:Springer Berlin Heidelberg

Authors: B. N. Dwivedi;

doi: 10.1007/3-540-36963-5_8

The Solar Corona

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Abstract

The solar corona is an extremely hot (106 K or about 0.1 keV), almost fully ionised plasma which extends from a few thousand km above the Sun’s visible surface or photosphere (6000 K) to where it freely expands into the solar system as the solar wind. The exact reasons for its high temperature are still being debated despite more than 50 years of research, but magnetic fields are believed to be responsible for this heating. This article reviews some recent progress in our understanding, using data from spacecraft (Yohkoh, SOHO and TRACE) and from ground-based eclipse observations.

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Banaras Hindu University
India

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