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Solar activity

Sunspot regions, coronal holes, filaments? In this forum we discuss everything related to the activity on our nearest star.

Solar activity forum rules - Let's keep things tidy!

1. Want to talk about a sunspot region? Feel free to make a topic! Keep the title clean and simple! For example: Sunspot region 1234, or AR1234.
2. Want to discuss a solar flare? Do not make a new topic! Post in the existing topic for that sunspot region or make a new topic if the sunspot region in question does not have a topic yet!
3. Solar flares and sunspot regions on the east limb that are not numbered yet are discussed in this topic.
4. Returning active region? Make a new topic with the current sunspot region number. Do not revive the old topic for that sunspot region!
5. Want to talk about coronal holes? There is a dedicated topic for that. Do not post a new topic.
6. Want to talk about filaments? There is a dedicated topic for that. Do not post a new topic.
7. Discussions about possible earth-directed coronal mass ejections and the geomagnetic storm that it might cause go in the geomagnetic activity forum.

860 topics in this forum

  1. Mystery CME

    By Sirvegs,
    • 4 replies
    • 770 views

  2. Is 12975 Beta Gamma Delta?

    By jon_helioastro,
    • 4 replies
    • 688 views

  3. AR 2978 Again a boring big spot?

    By Chris, HB9DFG,
    • 6 replies
    • 734 views

  4. AR 2974: M1 flare, weak CME 1 2

    By Sam Warfel,
    • 36 replies
    • 1.7k views

  5. Sunspot photo taken with a phone

    By Dżor,
    • 8 replies
    • 2.2k views

  6. Double complexity

    By jon_helioastro,
    • 0 replies
    • 128 views

  7. whats with the solar protons

    By farm24,
    • 24 replies
    • 915 views

  8. New CME towards Earth?

    By David,
    • 7 replies
    • 882 views

  9. I’m done over-hyping coming spots, but…

    By Sam Warfel,
    • 3 replies
    • 580 views

  10. Cause of radio emission?

    By Sam Warfel,
    • 3 replies
    • 620 views

  11. CME Question

    By Tormentius,
    • 10 replies
    • 765 views

  12. 3 simultaneous CMEs

    By Sam Warfel,
    • 5 replies
    • 743 views

  13. Sunspot Prediction

    By MinYoongi,
    • 4 replies
    • 653 views

  14. M2 flare

    By LunarLights58,
    • 15 replies
    • 926 views

  15. Solar orbiter data?

    By Sam Warfel,
    • 6 replies
    • 808 views

  16. CME Impact ahead? 1 2 3

    By MinYoongi,
    • 52 replies
    • 4.2k views

  17. AR12965 Magnetic Class?

    By jon_helioastro,
    • 2 replies
    • 277 views

  18. (AR2965) "Hello limb side, next group please..."

    By Chris, HB9DFG,
    • 9 replies
    • 851 views

  19. Sustained G1 Minor Storming 2022-MAR-05 and -06

    By Drax Spacex,
    • 7 replies
    • 651 views

  20. AR2962, faculae becomes spotty...

    By Chris, HB9DFG,
    • 7 replies
    • 856 views

  21. Cause of radio emission?

    By Sam Warfel,
    • 19 replies
    • 995 views

  22. Solar Frenzy February 15, 2022! X10-X20 Flare?

    By Patrick P.A. Geryl,
    • 0 replies
    • 463 views

  23. M2 flare 1 2

    By LunarLights58,
    • 26 replies
    • 1.9k views

  24. Question about Met Office

    By Tormentius,
    • 6 replies
    • 705 views

  25. AR 2957

    By LunarLights58,
    • 4 replies
    • 530 views
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