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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. AR2960

    By Sam Warfel,
    • 11 replies
    • 772 views

  2. are we going to be in for a treat in about a week? 1 2 3 4 11

    By farm24,
    • 259 replies
    • 17.4k views

  3. CME

    By farm24,
    • 2 replies
    • 417 views

  4. Active region numbers

    By KevinOR,
    • 2 replies
    • 1k views

  5. How to transform aia193 fits file to png like this?

    By Jack Yang,
    • 7 replies
    • 604 views

  6. UV spike readings on CME days 1 2 3

    By FairyG,
    • 70 replies
    • 3.5k views

  7. Wait... how is this possible?

    By Solar_Marcel,   
    • 3 replies
    • 528 views

  8. another huge eruption

    By fanaticstargazer,
    • 1 reply
    • 550 views

  9. Interesting Dual / Double Comet

    By Drax Spacex,
    • 3 replies
    • 365 views

  10. some questions as a starter in space weather 1 2 3

    By FairyG,
    • 62 replies
    • 2k views

  11. Huge CME from northeast limb 1 2 3

    By LunarLights58,   
    • 56 replies
    • 2.3k views

  12. Region 2941 1 2 3 4

    By Solarflaretracker200,
    • 92 replies
    • 5k views

  13. Question about Solar Filament

    By Tormentius,
    • 1 reply
    • 378 views

  14. The new AR is here! (M-flare) 1 2

    By Sam Warfel,
    • 37 replies
    • 2.3k views

  15. ARs 2939 and 2940 1 2 3

    By Space pro,   
    • 58 replies
    • 3.8k views

  16. Nice CME or two

    By LunarLights58,   
    • 0 replies
    • 229 views

  17. Question about CME

    By Tormentius,
    • 1 reply
    • 460 views

  18. AR2936 1 2 3

    By LunarLights58,   
    • 74 replies
    • 4.2k views

  19. confusion on AR2936

    By Solarflaretracker200,
    • 3 replies
    • 694 views

  20. New AR over the limb? 1 2

    By farm24,
    • 26 replies
    • 1.5k views

  21. What is the highest number sunspots you have seen? 1 2

    By Solarflaretracker200,
    • 40 replies
    • 2k views

  22. More coming? 1 2 3 4 5

    By Sam Warfel,
    • 110 replies
    • 6.4k views

  23. Some questions about solar activity

    By FairyG,
    • 8 replies
    • 312 views

  24. I think soon 2929 might develop delta spots 1 2 3

    By farm24,
    • 70 replies
    • 3.4k views

  25. Can I find the past 10.7cm Solar Radio Flux on here?

    By Solarflaretracker200,
    • 9 replies
    • 581 views
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