[b] http://asterisk.apod.com/viewtopic.php?f=31&t=22282 [/b] wrote:
<<Schrijver and Title broke down the Great [Solar] Eruption [on August 1, 2010] into more than a dozen significant shock waves, flares, filament eruptions, and CMEs spanning 180 degrees of solar longitude and 28 hours of time. At first it seemed to be a cacophony of disorder until they plotted the events on a map of the sun's magnetic field. Title describes the Eureka! moment: "We saw that all the events of substantial coronal activity were connected by a wide-ranging system of separatrices, separators, and quasi-separatrix layers." A "separatrix" is a magnetic fault zone where small changes in surrounding plasma currents can set off big electromagnetic storms.>>
A very long solar filament that had been snaking around the Sun erupted earlier this month (Dec. 6, 2010) with a flourish. NASA's Solar Dynamics Observatory (SDO) caught the action in dramatic detail in extreme ultraviolet light of Helium. It had been almost a million km long ((about half a solar radius) and a prominent feature on the Sun visible over two weeks ago before it rotated out of view. Filaments are elongated clouds of cooler gases suspended above the Sun by magnetic forces. They are rather unstable and often break away from the Sun. Note: the edge of the moon can be glimpsed at 0300 UT during a brief lunar transit.
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk. — Garrison Keillor
That's cool, even though it's hot, really hot. Aside: Even though the corona is over a million degrees, because of the lower density compared to chromosphere and photosphere i would think that there is significantly less energy (per unit volume) than these. Kind of like how the thermosphere on Earth is at a higher temp, but would not supply much heat. It's a little misleading.