Would tusenfem be qualified to fill you in?
Jd116?
Alfven said:The correlation of the magnetic storms and aurorae with the solar activity indicates that they are due to some agent emitted from the sun. As this agent causes magnetic and electric disturbances on the earth, it probably consists of charged particles. But, as Schuster has shown, the emission of a sufficient amount of particles, all having the same sign, is impossible because it would give rise to an enormous space charge. This difficulty is avoided if the emitted agent is assumed to consist of the equal amount of positive and negative particles.
Consequently the general nature of the current system during the main phase of a magnetic storm must be somewhat as follows. The stream approaching the earth contains positive and negative charge in equal amounts so that the electric current is zero. Through the action of the magnetic field of the earth the paths of the positives and of the negatives become differentiated, but until the particles reach the forbidden region, the space charge is always zero because the positives and negatives neutralize each other.
and on Saturn
Magnetic field characters of returning flux tubes in Saturn's magnetosphere
The return current!
Before tusenfem said we would ignore this paper, I read its abstract and introduction. I thought it was amusing that Sol88, whose muddy ramblings often seem to deny the relevance (and perhaps even the existence) of magnetic fields, would cite a paper whose first sentence isGot a new term for you Evershed flows and counter Evershed flows
So just to make the discussion even muddier, you come up with something you found on the web, which deals with flows on the surface of the Sun, either away from a penumbra or in fewer cases towards the penumbra.
We will ignore this, thank you very much.
Before tusenfem said we would ignore this paper, I read its abstract and introduction. I thought it was amusing that Sol88, whose muddy ramblings often seem to deny the relevance (and perhaps even the existence) of magnetic fields, would cite a paper whose first sentence is
Sunspots are a manifestation of solar magnetism.On the other hand, I suspect I have no more idea of what Sol88 is trying to say than Sol88 does.
Can't read, can you? I just showed you in the papers you quoted where the current sheets are overall charge neutral. Get over the fact that you haven't got a clue what you are talking about. And neither does Scott.
It's another Gish Gallop to cover his abject ignorance of real science.You haven't got a clue what you are saying. Just saying.
and on Saturn
Magnetic field characters of returning flux tubes in Saturn's magnetosphere
The return current!
Not just found on the surface of the sun are they now!
The best known of these is the Evershed effect, which describes a horizontal outflow in the photospheric layers of penumbrae. In the chromosphere and transition region it reverses into an inflow, and is also seen as a downflow above umbrae.
Seen your name pop up.
Or all those peer reviewed jobs just having a lend of me?
Tusenfem,
Let’s talk semantics,
What are we, here in this thread, going to call these structures?
Nested flux tubes? Evershed flows and counter flows? Birkeland current? Force field aligned currents? Power cables for “Magnetic reconnecting” of ion and electrons flows?
Need something snappy.
You’ve dealt with them, afaik, in the MMS and Rosetta missions.
Seem pretty common, now, in peer reviewed mainstream papers.
But the names seem all over the shop??
Sheets are just flat version of the tubes. A geometry thing but still nested electrons and ions going,
>>>>>>>>>>>>>>>>>>>>>>
<<<<<<<<<<<<<<<<<<<<<<
>>>>>>>>>>>>>>>>>>>>>>
Hard too “see em” until you fly thru one with the correct instrumention.
Ulysses was awhile back now.
One wonders if these nested power cables going out and coming in at the poles of the Sun may play a part in the big curcuit?
In a collisionless plasma? I’ll give you they are “lossy” but they don’t seem to dissipate easily.
In fact some are quite long.
AGN Jets are big lossy coaxial cables. Apparently the current can also return nested inside the cables.
Whoda thunkit?![]()
Apparently, this is in Scotts force free electric current model.
Also seems the ELECTRONS are doing the heavy lifting. Problem is you’ve been looking at the ion/s (MHD).
Missed the memo?
So....ummmm...electrons and ions going both ways in a plasma cable?
When sail thru the turbulent plasma full of force free electric currents (solar wind) and you sample it on the whole.
Quasi neutral.![]()
But the dissipation is still pretty minimal in these plasma power cables/wires or whatever helps you visualise bloody big extension cords in space.![]()
But the dissipation is still pretty minimal in these plasma power cables/wires or whatever helps you visualise bloody big extension cords in space.![]()
For what, what is that purported "current" returning from? Where is Saturn receiving "current" from to have returned to it?
You seem confused and fixated on "current". It's power, energy over time, that is required to power, well, anything. Even the EU.
This has absolutely nothing to do with currents, it is basically interchange of "full" and "empty" tubes.

Tubes of what?
![]()
Sure, if you know what that means.
Well, you can call them unicorns, for all I care.
I am going to call them a "flux tube" or an "Evershed flow" or a "Birkeland current".
I don't really know what "force field aligned currents" are, and "power cables" is electronics and that is another department at my institute.
So, there is no one-term to call this collection, they have their own names because of a reason.
Nope, we need (plasma) physically correct names, otherwise we get non-sensical discussions, as is clear from this whole thread.
I have dealt with lots of stuff.
Nope, YOUR insistence that everything is the same, when it is clearly not the case, makes it look TO YOU that the names are "all over the shop".
No, a sheet is a sheet and a tube is a tube, they are topologically different. NOT EVERYTHING IS THE SAME.
If you keep your eyes closed it is difficult to see anything. If you are living in Rotterdam it is difficult to see a temple in Bangkok.
Wow, we agree on something.
There are NO CABLES in space, and now they are supposed to be nested too?
As this "big circuit" driving the Sun is an EU idea, and YOU are (one of the last) proponents, it is onto YOU to show that it works somehow.
M.VolwerkAnother fact that does not come into both presented pictures in Fig. 3 is that the solar wind IMF does not have a steady direction.
The well known Parker spiral [Parker, 1958] of the IMF is only obtained after averaging over relatively long time periods [see e.g. Ness and Wilcox, 1964; Borovsky, 2010], and even in a perfect spiral there will be sectors where x and x ,i.e.pointing Sunward or anti-sunward.
This means that magnetic field of different directions will be transported towards the comet, and will result into so-called “nested draping.”
The result is that layers of magnetic field of different directions will be wrapping around the nucleus as an onion. Very nice examples are shown in Fig. 4AA from Riedler et al. [1986] and Fig. 4BB from Raeder et al. [1987], who studied the VEGA 1 flyby on 6 March and the Giotto flyby of comet 1P/Halley on 13 and 14 March 1986, respectively.
Looking at the layering of the magnetic field directions for ingress and egress, Raeder et al. [1987] were able to identify and connect layers with different polarity.
This means that the induced magnetosphere around a comet consists of a complex geometry of magnetic fields, as if a large amount of different kinds of curtains have been draped around the nucleus. One of the consequences of these rotations of the magnetic field is that there will be current sheets generated in the coma.
M.Volwerk
What did you end up calling them again? Unicorns...
Is the eversged and turbulent IMF a unicorn?
![]()
Magnetic flux. That is why they are called 'magnetic flux tubes'. Funny that, eh? So, as I understand it they can include plasma or not. As far as I can remember from the Enceladus paper, the neutrals from the moon are ionised, adding to the magnetospheric plasma, and if that carried on forever, you would have a very dense magnetosphere. So, again as I understand it, the plasma is carried off into the tail by flux tubes, which then get rid of the plasma to the solar wind via reconnection, which returns the depleted tubes to the inner magnetosphere.
But, hey, what do I know? I merely read the paper and a couple of others!
Jeez, talk about comparing apples with pears!