Solar activity

https://solarwww.mtk.nao.ac.jp/mitaka_solar/wl-fulldisk-newsunspot/image/2024/sr20240511.jpg - AR 13664 (S18) on the disk on its first rotation on May 11, 2024. https://solarwww.mtk.nao.ac.jp/mitaka_solar/wl-fulldisk-newsunspot/image/2003/sr20031029.jpg - AR 10486 (S18) on the disk on its first rotation on October 29, 2003. These two sunspots, 13663 and 13664, persisted on the disk for at least two rotations. One of these two (13664) is some of the largest sunspot regions ever recorded in modern history, like old 10486. Info of 13663: Persisted for at least 57 days. Info of 13664: Persisted for at least 55 days. (For compari…

As of June 24, 2024, at 0930UTC, AR 13697 is just behind the southeastern limb/behind AR 13723. Image of 2024/06/24, Carrington Degree 90° at the center of disk. Rename this topic if a new number has been assigned to AR 13697. Otherwise, lock this topic. AR 13723: AR 13723

As of 0950UTC, AR 13724 is located at S14E44, is currently slightly growing, and has an α configuration. It could be part of AR 13722 as the latitudinal separation between the southernmost location of one of the two penumbrae and the northernmost location of the other penumbra is only 0.93 degrees. You can merge this topic with AR 13722 or lock this topic if this is confirmed to be a single active region (AR 13722).

Strong development today

As of 330 UTC, this new region was located at S13 E62 with a Beta designation and comprised of 2 sunspots, but growing.

Just looking around the forums here quickly... I notice that a lot of people use a different format for topics for specific sunspot regions. What I mean is that some people make topics with titles like... AR1234... others write Region 1234 or just simply 1234... Which is okay... but it looks a tad chaotic? Should we perhaps enforce one specific format like only AR1234 or only Region 1234? Or do people not care? Hope it makes sense what I am trying to say. I am not sure how to properly explain what I mean. 🙃

Didnt see a topic for this one yet, delete this thread if it has allready been created. Looks interesting so far.

See the region on the northeastern limb/top left? 14 days prior, there is old 3691 on the northwestern limb. It is expected to return today or tomorrow.

We all hope this region will resume its high-level activity soon. Nothing much yet. This region was formerly AR 3663 if y’all are playing catch-up. Mike

Responsible for a hi C flare already. I didn’t see a topic yet for this region.

hello everyone, I'm new here and this is my very first post. i've got a burning question which I can't seem to find the answer to on youtube or google after researching. my question is how do I determine the size of a sunspot. This website give a demonstration to how to calculate a region, where Earth is equal to 170MH. when I try and calculate a region for example, AR13354 ( date of typing this 29-june-2023 12:00UTC) is shows that it's at 890MH. so my calculations are as follows: 890 divide by 170MH = 5.2 Earths. my question is, is this calculation correct? by this method, I wouldn't be able to fit 109 earth stacked next to each other as seen f…

hey all. Checking out some data from the past few days I've noticed these long, thin eruption things that seem to be originating from region 3638. Anyone know if they have a name? I'd love to learn more about them, especially what causes them to be so consistent.

AR 3697, previously 3664, is expected to return on June 24-25.

Something is happening there but from Suvi images I dont know if this is a flare or filament snapping.

Still small, but looks like an anti-Hale region to me. Always something to be on the lookout for.

There are magnetically complex regions that produce lots of solar flares like 5395 (β-γ-δ), 9393 (β-γ-δ), and 13664 (β-γ-δ). In SC22, there exist only three very flare-productive active regions, 5395 (β-γ-δ), 5629 (β-γ-δ), and 6659 (β-γ-δ), that produced X21.5, X28.5 and X12+ flares, respectively. In SC23, there exist only two very flare-productive active regions, 9393 (β-γ-δ), and 10486 (β-γ-δ), that produced X28.5 and X45 flares, respectively. In SC24, there exist only one very flare-productive active region, 12192 (β-γ-δ), that produced an X4.5 flare. In SC25, there currently exist only one very flare-productive active region, 13664 (β-γ-δ), that pr…

We had a S3 SPE the last days and I have some questions, I can't find the answer here at SWL. What I know: The SPE take place when eruptions occur. Flares can have CME or mostly when impulsive without CME. CME and Protons have nothing in common, two different things. Protons are highly energized particles and they travel extreme fast. Parker spiral can speed them up. The "snow" in LASCO is caused by protons when they hit the sensor. What I don't know: When will protons eject from the sun? We had so many big eruptions in May with no SPE. Where are the protons located, are they somewhere inside the sun or around the sun? Can someone explain this in a h…

Did anyone know that peak flux levels above X15 are estimated? Plus there is dispute about what is the largest solar flare ever recorded since 1976? Is it the 2003/11/04 flare (X45), the 1991/06/01 flare (X17+), or the 1989/08/16 flare (X28.5+)? Image of 1989/08/14 (5629 (β-γ-δ) is the big region at the southwestern limb/bottom right, 5643 (β-γ-δ) is the big region at the northeastern limb/top left), 2 big regions. Image source: https://solarwww.mtk.nao.ac.jp/mitaka_solar/wl-fulldisk-photo/calendar/1989/jpg/wl19890814_001.jpg Discuss anything about large solar flares here.

This region poked its head around the corner and introduced itself with dragon fire breath - a M4 flare -this morning. It will be nice to see what it looks like in a day or two…

Does anyone know what is causing the current proton flux increase? It looks like it started spiking about 8 hrs ago and it is right on the warning threshold according to the GOES satellite and the radio map show signs of a polar absorption event happening again (it had waned from 2 days ago) but I haven't herd of any proton eruptions in the past day or so.

AR3685 - another promising region. Will it mimic the AR3664?

Hey everyone I'm interested in solar weather and everything that comes with it but I will be honest I get extreme anxiety over the sun and the what if so my question is has and is the sun acting normal lately and is it completely normal for x flares to happen ?

This is from Solarham... The official NASA explanation As we prepare to say goodbye to AR 3664 (3697) for the second time, below is a look back at the formerly massive sunspot region over the past nearly six weeks. After first turning into view on May 1st, it would continue to grow and go on to produce twelve X-Flares during the first transit. After rotating onto the farside of the Sun on May 14th, it would reappear again on May 28th. Another five X-Flares were detected during the second transit, bringing the total to 17. A pretty impressive run! Of course there was also the energetic M9.7 flare early Saturday morning which produced a bright CME that is expected to d…

Hey, can everyone tell why sometimes flares are reaally long, what does it means? Like this one we’re observing

Hello all, i somewhat understand the Goes Xray Flux charts, however. i notice that before some flares there is period where Goes 16 short and goes 18 short diverge and show different levels, and ive noticed it happens shortly before some activity ( small or large) happens. for instance : 2024-06-10 at 02:26 UTC Goes 16 Short - 2.82e-8 Goes 18 Short - 1.80e-8 ( i have referenced the largest difference between the two satelites/sensors in the last 6 hours ) its not always this different. what does this difference in data show us? is it mainly a "failsafe" second point of data from Goes 16 ( with 18 being the most recent satelli…