The question Can a Neutron Star become charged? and the associated comments and answers started me wondering; Are there measurements of, or experimental limits to the residual charge of the Sun?

Because the Sun has a complex atmosphere and a net solar wind, I there may be some subtleties related to what sphere is used to establish the net charge Q inside, so rather than me define a radius it may be better to see what evidence is available.

Since there is an ionized component of the solar wind and protons are 2,000 times heavier than electrons, I'm thinking that an initially neutral Sun would loose electrons more rapidly than protons, until a strong enough static field was produced that would add the extra "push" for the protons to leave at the same rate, but that's an extremely simplistic model.

I'm asking primarily for some kind of measurement or experimental data rather than purely rationalization or hand-waving. Has there ever been an attempted measurement of the static residual charge of the Sun?

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    $\begingroup$ @honeste_vivere thanks for your comment. If there is some accepted, peer-reviewed work that demonstrates that the presence of a supersonic wind makes a measurement of a residual charge impossible, or a measurable charge impossible, that might be a good answer here. Of course a better answer would be "yes there has been a measurement or experimental limit", or "no there hasn't", because I didn't ask if a measurement should or could be made, but instead, asked if one has been. $\endgroup$ – uhoh Oct 30 '17 at 0:58
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    $\begingroup$ @AtmosphericPrisonEscape I don't believe that saying "there exists a Debye length so the question is moot" is correct, and I don't believe the solar wind can mask an arbitrarily large amount of charge in 10 meters. If you can show otherwise, post it as an answer where it can be voted on. Or consider posting an answer to the question as asked. $\endgroup$ – uhoh Oct 30 '17 at 1:00
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    $\begingroup$ @honeste_vivere I hadn't seen that before. OK I'll take a look and give them a read, thanks! $\endgroup$ – uhoh Oct 30 '17 at 18:23
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    $\begingroup$ I am guessing that the move to chat option has been offered to each of you by now. This exchange is not really helpful (or interesting) for anyone else to read. Why not move it to a chat room, delete here, and when it's resolved just add some kind of conclusion instead; ideally as an answer to my question. Comments here should not be used for an extended discussion between two other users, that's what chat is for. Thanks!! $\endgroup$ – uhoh Dec 5 '18 at 4:15
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    $\begingroup$ @uhoh - I agree, I deleted my posts. $\endgroup$ – honeste_vivere Dec 5 '18 at 13:14

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