If the sun was not electrical, why does it have a corona?
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Scientists identified Fe 13 as part of the light emission of the corona as a weak green line.
It is theorized that oscillating magnetic fields from the sun's surface generate currents that flow through the highly ionized gases above the photosphere and in the corona. When current flows through a resistor some of the energy is dissipated as heat.
What may heat the corona is unknown: microflares, magnetic and acoustic waves, and electrical dissipation are the best candidates, but the observed energy flux into the corona from each source is too low to account for the observed coronal heating.
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The amount of energy produced by this electric current is many magnitudes less than the amount of energy produced by fusion. Think about, say, a wind generator spinning and creating a little electricity compared with a hydrogen bomb of the same size.
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What books provide research material on the Corona of the Sun?
Have you studied the electric sun theory of dark current?
I have done some studying of the electric sun theory. I think I have a basic understanding of what the theory of Birkeland current (or dark current) attempts to explain regarding plasma field theory. According to what I have read, the corona is a cold plasma field, which is not really cold, and it seems to support the coronal heating that can ionize Fe 13. I found some interesting sources which I will give below. The thunderbolt site is offering e-books. Wal Thornhill discusses Ralph Juergen's Electric Sun Model on the kronia site thoroughly. It is also discussed with illustrations on the electric-cosmos.org site. I am still looking for books on the subject, but if you want to do further research, look into works on plasma physics that discuss Birkeland currents.
http://www.kronia.com/thoth/ThoIII06.txt
http://www.physorg.com/news154771020.html
http://www.thunderbolts.info/tpod/2009/arch09/091123darkmode.htm
http://www.electric-cosmos.org/sun.htm