Profile image
Story Views

Last Hour:
Last 24 Hours:

Spectacular filament eruption, waves of ionization and Sun’s polar magnetic field shift for end of August

Friday, August 31, 2012 17:12
% of readers think this story is Fact. Add your two cents.

Spectacular solar filament eruption, thousands of kilometers long, occurred at the Sun’s southeast quadrant. Solar X-Ray flux chart values reached almost M-class flare threshold. Huge filament collapsed after almost a week of activity and it resulted in a large flare and CME.

Watch ENLIL CME forecast to view where the plasma cloud go. (It looks like it is going direct to us btw).

Magnetic fields around southeastern quadrant are crackling with C-class solar flare and it could unleashed another M-class flare pretty soon. NOAA/SWPC forecasters estimate a 40% chances for M-class events during the next 24 hours. The most active sunspots are AR 1560 and AR 1563. New Sunspots 1561, 1562 ad 1563 were numbered on August 30 and old region 1545 from the previous rotation is now in Earth view.

There are no large coronal holes on the Earthside of the sun.

Waves of ionization

Extreme ultra-violet pulses are causing waves of ionization around the dayside of our planet. The extra ionization altered the propagation of very low-frequency radio signals around northern Europe. Readings from laboratory in Lofoten, Norway show the sudden ionospheric disturbances. And more ionization waves are about to come.

Early August filaments

SIDC/STCE report from August 31 brings filament eruption overview from first half of this month. Several multi-legged small filament pillars seen dancing around the solar north pole in early August. Dark and dynamic strands started to develop on August 3 in the northeast, and about half a dozen could be seen for a few days by SDO.

Around August 7, they start interacting with each other and with magnetic elements inside and outside the area they encircle. Normally, the solar rotation would guide them across the solar limb and out of sight, but being so close to the solar pole, the filaments and their frantic interactions were large enough to be seen from behind the north limb.

On August 11 the filaments erupted in a spectacular way. The magnificent event was nicely captured in this movie from SDO/AIA171 and AIA304 imagery.

Solar scientists are very interested if solar poles have already switched their magnetic polarities. As long as observations of the solar magnetic field have been available, it has been known that the sun flip-flops its polar magnetic field around the time of the solar cycle maximum. And we are now starting to experience peak of solar maximum.

Magnetic supersynoptic chart for 1974 to 2012 

Super-synoptic plots of the solar magnetic field like this one from the Mount Wilson Observatory, show the migration of the magnetic fields over the solar surface (red is negative polarity, blue positive). Reversals of past solar cycles are indicated with green ellipses. 

The filamentary strands visible early August seem to indicate there is still magnetic flux of opposite polarity very near to the north pole, implicating the reversal is not complete. However, the magnetic maps clearly indicate that the solar north pole is on the verge of permanently switching its magnetic polarity. The southern pole is lagging, perhaps by as much as a year. These reversals are yet another sign that solar cycle 24 is approaching its maximum.

Related posts:

  1. Sunspot 1513 unleashed second M-class solar flare – waves of ionization over Europe Another M-class solar flare was released from Sunspot 1513 on…
  2. Eruption of magnetic canopy of sunspot 1190 The magnetic canopy of sunspot 1190 erupted on April 15th,…

Spectacular filament eruption, waves of ionization and Sun’s polar magnetic field shift for end of August


We encourage you to Share our Reports, Analyses, Breaking News and Videos. Simply Click your Favorite Social Media Button and Share.

Report abuse


Your Comments
Question   Razz  Sad   Evil  Exclaim  Smile  Redface  Biggrin  Surprised  Eek   Confused   Cool  LOL   Mad   Twisted  Rolleyes   Wink  Idea  Arrow  Neutral  Cry   Mr. Green

Top Stories
Recent Stories



Top Global

Top Alternative




Email this story
Email this story

If you really want to ban this commenter, please write down the reason:

If you really want to disable all recommended stories, click on OK button. After that, you will be redirect to your options page.