Are all Magnetic Dynamos the same ?

[Widdekind]

Our sun exhibits periodic field reversals (~10 years). Our earth exhibits periodic field reversals (~10⁵ years). Our sun reverses field, at "solar maximum", when their are the maximum number of local field anomalies, called "sun spots". And, our earth, long-over-due for "scheduled" field reversal, is starting to show localized, anomalous, field-reversed regions, e.g., South Atlantic Anomaly (SAA).

 

QUESTION: Could you call the SAA an "earth spot"? To wit, are "earth spots" and "sun spots" similar, if different-size-scaled, manifestations, of the same underlying Magnetic Dynamo field-reversal process ??

[Schrödinger's hat]

Our sun exhibits periodic field reversals (~10 years). Our earth exhibits periodic field reversals (~10⁵ years). Our sun reverses field, at "solar maximum", when their are the maximum number of local field anomalies, called "sun spots". And, our earth, long-over-due for "scheduled" field reversal, is starting to show localized, anomalous, field-reversed regions, e.g., South Atlantic Anomaly (SAA).

 

QUESTION: Could you call the SAA an "earth spot"? To wit, are "earth spots" and "sun spots" similar, if different-size-scaled, manifestations, of the same underlying Magnetic Dynamo field-reversal process ??

 

I suppose there might be some similarities, conductive fluid vs plasma, but generally plasmas do a lot of weird stuff that you don't tend to see elsewhere, so I would hesitate before assuming they're going to be too much alike.

[Widdekind]

Degeneracy is common in stars, sub-stars ('Brown Dwarfs'), and super-planets ('Gas Giants'). And, even at standard terrestrial temperatures & pressures, the outer 'conduction' electrons, in solid metals, are considered to be Degenerate. What, then, happens, in the molten iron cores, of 'super-earth' sized rocky planets, [math]m \leq 10 M_{\oplus}[/math] ? As you squeeze iron atoms together, first the outer 'valence' electrons will "blur" into "bands"; but, as you squeeze them further, progressively more & more, deeper & deeper level'ed, electrons will also become "band blurred". Is the iron in the core of the earth, in an "ultra-conductive" Degenerate state, e.g., hypothetical hydrogen super-conductor in the core of Jupiter ?

 

Naively, according to the H.U.P., if electrons normally confined, in atomic isolation, to orbitals of isolated size-scale [math]\Delta x[/math], are compressed due to pressure, down to a size-scale of [math]\Delta x' < \Delta x[/math], then would not the "Degeneracy partial pressure", of that "blurring band" of electrons, be related to that band's Fermi Energy, [math]E_F \approx \frac{\hbar^2}{2 m_e \Delta x'^2} - \frac{\hbar^2}{2 m_e \Delta x^2} = E_0 \left( \left[ \frac{\Delta x}{\Delta x'}\right]^2 -1 \right) [/math] ? If so, then, as P increases, more & more orbitals-cum-bands provide more & more Degeneracy-P support.