Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/theastro/public_html/include/vshare.php on line 7

Deprecated: Function mysql_numrows() is deprecated in /home/theastro/public_html/include/ on line 172

Deprecated: Function mysql_numrows() is deprecated in /home/theastro/public_html/include/ on line 172
The AstronomersNASA SDO - Large Sunspot AR1339, November 1 - 8, 2011
NASA SDO - Large Sunspot AR1339, November 1 - 8, 2011
facebook  digg  delicious  newsvine  reddit  simpy  spurl  yahoo
Favorite  Add to Favorites     Feature  Feature This!     Inappropriate  Inappropriate     Share  Share     playlist  Add to Playlist
  • Currently 0.00/5

Rating: 0.0/5 (0 vote cast)

Type of abuse
The black and white images show the magnetic field - the field is pointing toward us where it is white. The leading spots all have an intense negative polarity and the following spots are mostly positive. The two polarities are pretty well separated and fairly stable, which is why this region hasn't produced even more dramatic activity. The biggest explosions happen when complex magnetic regions annihilate each other. The glittering moving features around the spots follow the crests of magnetic waves. Not much new flux is emerging into this mature region, but there is a lot going on in the vicinity - and just about everywhere else too if you look carefully. The surrounding filamentary structures are weaker field regions that appear bright in intensity. The movie with the granular yellow background shows the Sun's surface brightness. Sunspot group 11339 is already large when it rotates around to the front side of the Sun. The umbra is the darker, cooler part where the magnetic field is very strong and vertical. The surrounding orange penumbra appears very dynamic because waves in the weaker horizontal magnetic field make it look like material is flowing out of the spot. Watch how the darkest regions develop in time. The largest spot is more than five times the size of our Earth. What you cannot tell from these pictures is which direction the magnetic field is pointing. Credit: NASA SDO
Added on Apr 2, 2012 by deek
Video Details
Time: 01:30 | Views: 644 | Comments: 0
  NASA  SDO  Solar  Dynamics  Observatory  HMI  EVE 
  Solar astronomy  
Video Responses (0)

Be the first to post a video response!

User Details
Share Details

Post Comments
Comment on this video:

Comments: (0)

More from: deek

Related Videos