The plasma in the solar wind seems to be according to our discussion in a hierarchic system. There are:

1. The electrostatic micro oscillations between charged particles in the plasma.
2. The weak double layers with their electric currents caused by temperature differences, cosmic rays, magnetic, gravitational fields…
3. The electric neutral clouds of plasma ejected by a sun’s activity.
4. A plasma of the whole solar heliosphere.
5. Probably system of the star’s magnetospheres causing galactic electric currents in their magnetopauses.

The solar wind is a plasma, therefore it has a plasma frequency, which varies depending on the local plasma density.

It is very useful for measuring the plasma density.

Ohhh, well spoken, I use it every day

In order to have a hierarchy, though, I think usually the one has something to do with the other, and are in a relational connection.
I take argument with #2 (guess that was to be expected) and I am not sure about #5.

But hey, next thread!

__________________

Any comments in glorious red are to be considered in ModeratorMode.


善數, 不用籌策 (shàn shù, bù yòng chóu cè)
He who is good at counting, uses no counting tools
“A good scientist has freed himself of concepts and keeps his mind open to what is”
道德經, 二十七 (dào dé jīng, 27)

I have an interest about the forces in the galactic plasma. May be, the solar wind is a good piece of a plasma, which we can investigate.

It is very difficult to keep the plasma together in the laboratory on the Earth (strong magnetic field, high energy lasers ...)

I have a question, if there are in a space (solar wind) many plasmas, they may interact with each other and perhaps even support their life. If there are many local and tentative currents , they will hold all system together in the heliosphere .

I don’t know how to call the next thread.

I started one for you: Electric currents in the ISM?, hope you don't mind.

In any case, there's not much point talking about the ISM or IGM here in this 'solar wind' thread.