PICK OF THE WEEK
Pick of The Week
Sputtering Active Regions (December 11, 2002)
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A pair of active regions seen in extreme ultraviolet light (ionized
helium at 304Å) sputtered and blossomed over a two day period, 26-28
November 2002. The region on the left blasts out particles in narrow
spurts at least nine times; the one on the right lets loose one
larger blast near the end of the sequence. In the meantime, giant
loops of particles that follow magnetic field lines arc out and back,
seeming to dance above of the Sun's surface. Emission in this
spectral line shows the upper chromosphere at a temperature of about
60,000 degrees K. The actual sequence is composed of 187 images
played at 15 frames per second-this translates into an image taken
about every 12 minutes for the two day period. Solar north is to the
left in the image and video clip.
SOHO began its Weekly Pick some time after sending a weekly image or video clip to the American Museum of Natural History (Rose Center) in New York City. There, the SOHO Weekly Pick is displayed with some annotations on a large plasma display. If your institution would also like to receive the same Weekly Pick from us for display (usually in Photoshop or QuickTime format), please send your inquiry to steele.hill@gsfc.nasa.gov. |
