Isatsuki San Posted May 22, 2021 Share Posted May 22, 2021 (edited) sorry for the weird title, sunspot 2824 that right now when I'm writing I'm causing class C solar flares, 3 classes C for now, its structure is very simple but its small points that it has I don't know if they are forming weak delta points and that is what is causing the call c activity right now, If I'm wrong, well I just wanted to see if what I think is correct or not I don't know, if what signals are possible delta weak points being formed Edited May 22, 2021 by Isatsuki San Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted May 22, 2021 Share Posted May 22, 2021 No delta’s simple spot configuration but some impulsive C-flare activity with a possible CME as there was a type II and IV radio burst and weak dimming 1 Link to comment Share on other sites More sharing options...
Isatsuki San Posted May 22, 2021 Author Share Posted May 22, 2021 2 minutes ago, Vancanneyt Sander said: No delta’s simple spot configuration but some impulsive C-flare activity with a possible CME as there was a type II and IV radio burst and weak dimming thank you very much for answering, Link to comment Share on other sites More sharing options...
abc Posted May 22, 2021 Share Posted May 22, 2021 There is a quite rapid but gradual rise in xray flux, is it due to rise in background flux ? Link to comment Share on other sites More sharing options...
Tristan Posted May 22, 2021 Share Posted May 22, 2021 No. It is an enhancement in sunspot 2824. You can see it in the 94A imagery. Link to comment Share on other sites More sharing options...
abc Posted May 22, 2021 Share Posted May 22, 2021 What does it mean, will the enhancement end or continue Link to comment Share on other sites More sharing options...
Tristan Posted May 22, 2021 Share Posted May 22, 2021 2 minutes ago, abc said: What does it mean, will the enhancement end or continue I'm not sure. Hopefully it will spread across the remainder of the sunspot and mature into a super long duration flare. I don't think that is very likely, but you never know. Link to comment Share on other sites More sharing options...
abc Posted May 22, 2021 Share Posted May 22, 2021 What is an enhancement Link to comment Share on other sites More sharing options...
Tristan Posted May 22, 2021 Share Posted May 22, 2021 22 minutes ago, abc said: What is an enhancement I not sure of the exact terminology. I have seen SWPC use it. I have taken it to mean an enhancement in x-ray flux from the coronal loops. They can last for many hours, but don't tend to release a CME like a long-duration flare. Not sure what the exact distinction is though. 1 Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted May 22, 2021 Share Posted May 22, 2021 Pretty impressive solar flare, although it's impulsive, it did however had a type II and type IV radio sweeps and there was a moderate coronal dimming. Looking forward for LASCO data as there might be a CME associated with the event Link to comment Share on other sites More sharing options...
abc Posted May 22, 2021 Share Posted May 22, 2021 (edited) 6 hours ago, Tristan said: No. It is an enhancement in sunspot 2824. You can see it in the 94A imagery. However, it is said that it belongs to a high duration flare from the forecast discussion in swpc. Slso, it has appeared that the glare or enhancement ended and background flux ended up abou b2 Edited May 22, 2021 by abc Link to comment Share on other sites More sharing options...
Tristan Posted May 22, 2021 Share Posted May 22, 2021 24 minutes ago, abc said: However, it is said that it belongs to a high duration flare from the forecast discussion in swpc. Slso, it has appeared that the glare or enhancement ended and background flux ended up abou b2 Perhaps it is a flare. The x-ray flux has not yet returned to background levels. In 12 hours it should be down to b1. The sunspot does look to have gained a little magnetic complexity, with more negative polarity spots emerging around the main spot. Link to comment Share on other sites More sharing options...
helios Posted May 22, 2021 Share Posted May 22, 2021 34 minutes ago, Tristan said: The sunspot does look to have gained a little magnetic complexity, with more negative polarity spots emerging around the main spot. A beautiful animation of the development on helioviewer: https://helioviewer.org/?movieId=MgXN5 It also gained a bit of area. 1 Link to comment Share on other sites More sharing options...
Tristan Posted May 22, 2021 Share Posted May 22, 2021 Very cool, thanks. Looks to be beta-gamma now. Link to comment Share on other sites More sharing options...
Tomasz Mielec Posted May 22, 2021 Share Posted May 22, 2021 And we have an M1.1 flare 2 Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted May 22, 2021 Share Posted May 22, 2021 And we have an Impulsive M1.19 solar flare from this region. It’s getting better, and indeed nice spot development 👍 Link to comment Share on other sites More sharing options...
Tristan Posted May 22, 2021 Share Posted May 22, 2021 33 minutes ago, Vancanneyt Sander said: And we have an Impulsive M1.19 solar flare from this region. It’s getting better, and indeed nice spot development 👍 There is coronal dimming again with this one. Looks like it is mostly directed to the south. This region seems to have a habit of producing prolific, weak, and highly asymmetric CMEs. I think we would need to see an eruption covering the whole sunspot to get a decent Earth-directed CME. So far they are all blasting sideways constrained by the unbroken coronal loops. 1 Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted May 22, 2021 Share Posted May 22, 2021 Not as much dimming as with the C6 but it’s indeed another small puff of CME in an other direction 😝 Link to comment Share on other sites More sharing options...
Tomasz Mielec Posted May 22, 2021 Share Posted May 22, 2021 And we have another impulsive flare M1.4 2 Link to comment Share on other sites More sharing options...
MinYoongi Posted May 23, 2021 Share Posted May 23, 2021 Hi! Today was a busy day for our Dwarf star and active region 12824 ! Many impulsive flares, dimmings and radio sweeps. NOAA mentioned some CME's in their forecast and i checked Nasa Enlil (click here to look at it) because Noaa hasnt updated their enlil yet. And it looks like only 1 glancing blow, but theyre speaking of multiple earth directed CME's with earth facing componentes, does someone want to look at them with me? I just wanna look at each in depth. Are there some not noteworthy, not earth bound at all? What KP do you expect upon arrival? Thanks in advance for everyone willing to discuss and look at it together! Link to comment Share on other sites More sharing options...
Drax Spacex Posted May 23, 2021 Share Posted May 23, 2021 12 hours ago, helios said: A beautiful animation of the development on helioviewer: https://helioviewer.org/?movieId=MgXN5 It also gained a bit of area. That is a nice detailed animation. It appears to be centered on the sunspot, and we do see the surrounding area moving away from that centered sunspot. However, it's somewhat difficult to tell whether the true size of the sunspot group is increasing in area. As a sunspot group moves across the solar disk, it will appear to increase in size (width) as it rotates toward the center of the solar disk, even if the actual size (width) has not changed. The factor by which the group is foreshortened in width is, I think, proportional to cosine of the longitude position of the sunspot group (-/+90 degrees with 0 in the center). Note that in the animation, it's not not expanding vertically, only horizontally. This is a clue that the actual area may not be increasing, and instead what we're seeing is just a reduction in the foreshortening as the group moves closer to the center of the solar disk. Link to comment Share on other sites More sharing options...
helios Posted May 23, 2021 Share Posted May 23, 2021 @Drax Spacex The area of 2824 reported by SWPC on 21/5 was 150 MH, on 22/5 it was 190 MH. 1 Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted May 23, 2021 Share Posted May 23, 2021 After some research about the CME's it seems that there might be a glancing blow possible on May 25th 21:00 (+ and - 7 hours). Impact of it would be rather low but let's await all model runs before making conclusions. 1 Link to comment Share on other sites More sharing options...
abc Posted May 23, 2021 Share Posted May 23, 2021 I would like to know whether the peak of a flare will be affected by the background flux Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted May 23, 2021 Share Posted May 23, 2021 3 minuten geleden, abc zei: I would like to know whether the peak of a flare will be affected by the background flux the peak of a solar flare is always above the background flux, it's not affected by it Link to comment Share on other sites More sharing options...
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