Sun has a flare for X rated movies

Posted: September 27, 2011 by tchannon in Solar physics

Figure 1

Image credit Catania sunspot group


Figure 2

Stanford WSO daily magnetic. Latest is here

As I expect sunwatchers are well aware the sun is going through a highly active phase, throwing out CME and X-class flares.

There are many news sources on the ‘net.

Try NASA news

If you have notable images or news I can add it here.

Sorry if I am a bit slow with this unfolding story.


  1. Tenuc says:

    Good solar image thanks to…

    Interesting that the heavy activity in all in the suns northern hemisphere and the polar coronal holes are starting to display a ‘trunk’ like appearance as the stretch towards the equator. Interesting to watch this develop – Carrington event on the way anyone?

    [not directly showing image, seems to be copyright private individual — Tim]

  2. tchannon says:

    That’s nicely mapping the activity regions.

    A rapid ramp to high activity is probably normal as the magnetic cycle changes polarity, this will show it
    We’ve never had a chance to watch this as it happens.


    I find the highly asymmetric pattern notable because asymmetry showing in the NASA/Greenwhich data seems to match terrestrial variation.

  3. adolfogiurfa says:

    Pier Corbyn says: An extremely active sunspot region 1032 will be earth facing on 29th-30th about the same time as an expected stream of fast solar wind from a Coronal hole hits earth 30- Oct 1
    However we must observe that most of the activity is just from one sun´s hemisphere.

  4. Tenuc says:

    [not directly showing image, seems to be copyright private individual — Tim]

    Strange, don’t normally have a problem. However, easily remedied, full image here…

    [I meant that I decided it was legally unsafe (for more reasons than are obvious) to make the image display on Tallbloke’s blog and therefore left it as a link — Tim]

  5. adolfogiurfa says:

    All this should make us remember our friend Vukcevic´s Sun´s polar field extrapolation curve:

  6. tchannon says:

    Yes indeed Adolfo. I expect he will be along soon.

  7. Heliocentric conjunction with Uranus on the 26th have anything to do with the activity?

  8. Gerry says:

    I find the Sept 27 combined syzygies of Uranus-Sun-Mercury with Jupiter-Sun-Venus quite geometrically interesting. Whether or not one thinks solar activity has anything to do with planetary configurations, September is going to finish as an extremely active month, following the lower plateau from March through August.


  9. Gerry says:

    Make that Uranus-Earth-Sun-Mercury and Jupiter-Sun-Venus. Yes, Gaia, you are important:)

  10. Michele says:

    @ Gerry & Holle

    Raffaele Bendandi

    Closed parallelogram planetary forces

    vector length =200 !

    From 160 —–> to 200

    Planets = Butterfly wings


  11. tchannon says:

    When was the last time this configuration happened?

  12. adolfogiurfa says:

    @Michele says: It seems that Benandi considered squared triangles as to measure the field force of each planet, as electricity and magnetism are at right angles….just wondering. (Sembra che Benandi considerato triangoli squadrati come per misurare la forza del campo di ciascun pianeta, come l’elettricità e il magnetismo sono ad angolo retto …. solo chiedendo.)

  13. Gerry says:

    If anyone reading this is well versed in tensor field analysis, perhaps some tidal significance can be ascribed to an unusual dual solar system syzygy:

    Or maybe it’s nothing more than a trivial statistical curiosity?

  14. vukcevic says:

    One more day to go, September non-smoothed SIDC number is ~ 75.
    This is the article
    that prompted the correspondence with Dr. Hathaway. Graph with the relevant formulae was forwarded, and Dr. Hathaway promptly declared it as a nonsense.

  15. Ulric Lyons says:

    I predicted (back in April) a strong peak in solar activity around and from the 17th Sept, and also a strong warming burst in the weather here. The critical planetary factor in the configuration then was Ceres (conjunct Earth 17th Sept), though that is not the whole picture. The more recent Ju/Ve opposition seems to be reducing energy (radio flux and flare strength).

  16. adolfogiurfa says:

    @Ulric Lyons What criteria do you use for the reduction/increase energy, as the individual EM fields are obviously different?

  17. Gerry says:

    Yes, and the small dip in SSN on Sept 27 is unlikely to be coincidental. The most amazing recent activity SSN dip occurred on Aug14, when the NOAA SSN dropped to zero. On Aug 15, there was an Earth-Mercury-Sun-Venus syzygy. I can’t explain why the syzygy occurred a day after the spotless day, but I think the time discrepancy is too small to consider this a causality violation.

  18. Ulric Lyons says:


    Short term land surface temperature deviations.