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Message Subject SOLAR WATCH * 312 M & 25 X FLARES starting 3-7-2011 (Updated Daily)
Poster Handle Spittin'Cesium
Post Content
The Mystery of the Sun's Magnetic Fields-Alpha and Omega?

Jan 09, 2013

How the Sun’s interior generates its magnetic field is a long-standing mystery for heliophysicists.

It is commonly believed that there is an electromagnetic dynamo inside the Sun. That dynamo has long been thought to be powered by two forces: the “stretching and winding” of magnetic fields due to the Sun’s differential rotation, or change in rotation rate, caused by differences in latitude, and the “twisting” of those fields because of rotational effects on structures rising up from deep in the Sun’s interior. The former is called “the omega effect” and the latter is called “the alpha effect”.

Until recently, those two forces were thought to be what powers the Sun’s magnetic field. Those movements through the Sun’s substance, as well as thermal convection due to the hypothetical radiation generated at the core, are required to be above a certain power threshold or the theory cannot be sustained.

According to a recent press release, researchers from New York University, Princeton University, the Max Planck Institute, and NASA have determined that the convective plasma flows in the Sun are 100 times too slow for the aforementioned phenomena to be generated.

more from Thunderbolts:
[link to www.thunderbolts.info]
 Quoting: Hugh M Eye


Hello allsunhf

Hugh,I am sure you know that was originally reported around 2011/12 but very important for the following reasons -

'These new findings based on SDO imagery, if verified, would upend our understanding of how heat is transported outwards by the Sun and challenges existing explanations of the formation of sunspots, the magnetic field generation of the sun, not to mention the concept of convective mixing of light and heavy elements in the solar atmosphere. 'However, our results (PDF) suggest that convective motions in the Sun are nearly 100 times smaller than these current theoretical expectations,' continued Hanasoge, also a postdoctoral fellow at the Max Plank Institute in Katlenburg-Lindau, Germany. 'These motions are indeed that slow in the Sun, then the most widely accepted theory concerning the generation of solar magnetic field is broken, leaving us with no compelling theory to explain its generation of magnetic fields and the need to overhaul our understanding of the physics of the Sun's interior' [link to science.slashdot.org]

[link to phys.org]

[link to www.sciencedaily.com]

A very important issue(obviously!)

Thank Hugh for sharing the Thunderbolts Info on this Bro' : )

sun
 
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