Piet,

my empirical view about velocity filtration,
see p.378-380 in "Physics of the Solar Corona".

Cheers,
Markus



On Jul 31, 2012, at 8:20 AM, Petrus Martens wrote:


    Do you mean velocity filtration, where the corona is simply particles from the
tail of the chromospheric distribution function?  That theory has been largely discredited.

That's news to me.  Do you have a reference?

Piet



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