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On Sun, 31 Dec 2006, andy everett wrote:
What is a rough estimate for the max radial electric field in the sun?
If you're interested in microscopic fields (ie the quasi-static fields of
the electrons, positive ions, and atoms with significant dipole moments),
about 10 (in Gaussian units) is a typical electrical field in the
photosphere. It's proportional to number density of charged particles
^(2/3), so you might be able to estimate typical microscopic fields
elsewhere in the sun. The photosphere is only very slightly ionised, so
keep that in mind.
Macroscopic electric fields? Try:
http://adsabs.harvard.edu/abs/1991SoPh..132..307F
There's older stuff, too. For example:
R. Gunn, The Electric Field, Atmosphere and Effective Temperature of the
Sun, Physical Review 37(9), 1129-1134 (1931) gives 0.015 V/cm. I've not
read the paper, so can't tell you whether this is radial or not, or
microscopic or macroscopic. Or correct, in light of post 1931 work.
Gunn also wrote some other relevant papers, which you should be able to
find by searching on PROLA or ADS ( adswww.harvard.edu/">http://adswww.harvard.edu/).
Finally, what about the typical electric fields of the radiation field? Of
interest?
--
Timo Nieminen - Home page: www.physics.uq.edu.au/people/nieminen/">http://www.physics.uq.edu.au/people/nieminen/
E-prints: eprint.uq.edu.au/view/person/Nieminen,_Timo_A..html">http://eprint.uq.edu.au/view/person/Nieminen,_Timo_A..html
Shrine to Spirits: www.users.bigpond.com/timo_nieminen/spirits.html">http://www.users.bigpond.com/timo_nieminen/spirits.html
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