One solar piece of flare
26 Mar 2010, 13:08 UTC
NASA, STEREO
The Sun is displaying its individuality — I guess the manager at Chochkies finally got through to it — by showing a nice little flare the other day:
This image, taken by the STEREO spacecraft (for Solar Terrestrial Relations Observatory), shows the Sun in the far ultraviolet, almost at X-ray energies. The bright flare is on the left. The slightly tilted elongated diamond is not real; it’s what happens when an electronic detector gets flooded with light. Detectors like this convert photons of light into electrons, and if too many photons hit it, the electrons leak out and "bloom" into nearby pixels.
Flares happen when the magnetic field lines of the Sun get tangled up. A huge amount of energy is stored in those lines! If the magnetic field gets too entangled, they can suddenly reconnect and release that energy. In my book, I make the analogy to a bunch of bed spring coils all under tension and thrown into a bag. If one snaps back, it hits the others which then snap, and you get a very quick and very violent release of energy. For the Sun, that means a solar flare is released. The one shown here ...




