
==Relativistic case== ==Heating the Corona== The Coronal heating problem is a longstanding question in heliophysics. It is unknown why the sun`s corona lives in a temperature range higher than one million degrees while the sun`s surface (photosphere) is only a few thousand degrees in temperature. Natural intuition would predict a decrease in tem.....
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http://en.wikipedia.org/wiki/Alfvén_wave

(from the article `plasma`) At the lowest frequency are Alfvén waves, which require the presence of a magnetic field to exist. In fact, except for ion acoustic waves, the ...
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http://www.britannica.com/eb/a-z/a/44

a type of oscillation of plasma particles, consisting of transverse waves propagating along the magnetic field lines in a plasma. Also called
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https://www.infoplease.com/dictionary/alfven-wave
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