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Reminder: this thread is for solar activity like flares and CMEs launching from the sunspot.
To discuss the CME's travel or impacts on Earth, please move to this thread in the geomagnetic activity forums.
Thanks!

 

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So? Will the 2005 record for a magnetic storm be broken? I am amazed that everyone is such an expert, why are you happy about solar flares if they can have a bad effect on humanity, namely headache (due to a magnetic storm), nausea and so on. Just as many sources write, there may be a blackout

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  • Drax Spacex
    Drax Spacex

    And we've been so well behaved.  No one asserted that the conjunction of the Sun, Jupiter, and Venus was the reason for the high activity from AR3664.  Such restraint deserves a kudos!

  • arjemma
    arjemma

    This region is amazing. Here's the development from May 4th to today. Stabilized.

  • Philalethes
    Philalethes

    Well, do us a favor and stop posting about it here over and over again, especially not using that nonsensical terminology that we all know where originates. We've already addressed it countless times

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Just now, Денис Максименко said:

why are you happy about solar flares

Because they are exciting and give good aurora!

1 minute ago, Денис Максименко said:

if they can have a bad effect on humanity, namely headache

There is no scientific evidence supporting space weather having an impact on human biology.

1 minute ago, Денис Максименко said:

there may be a blackout

Highly unlikely, our grids are designed to handle this and experts are monitoring it.

Bottom line, there is really nothing to worry about.

Wow, as I was browsing the DeFN page from earlier I just discovered that they actually publish live hourly vector magnetograms of all the active regions! I've been looking for that for quite some time, that's awesome. With that it's much easier to get an idea of the shear present in a given region. Here's the most recent one from this region:

ARID0013-020.png

14 minutes ago, Philalethes said:

Wow, as I was browsing the DeFN page from earlier I just discovered that they actually publish live hourly vector magnetograms of all the active regions! I've been looking for that for quite some time, that's awesome. With that it's much easier to get an idea of the shear present in a given region. Here's the most recent one from this region:

ARID0013-020.png

That's awesome! Im excited to check this out.

17 minutes ago, Philalethes said:

Wow, as I was browsing the DeFN page from earlier I just discovered that they actually publish live hourly vector magnetograms of all the active regions! I've been looking for that for quite some time, that's awesome. With that it's much easier to get an idea of the shear present in a given region. Here's the most recent one from this region:

ARID0013-020.png

nice find!! Great find! Wow.

 

and, hows the shear?

3 minutes ago, MinYoongi said:

nice find!! Great find! Wow.

and, hows the shear?

The way to get an impression of it is to look at the borders between the polarities (black and white), many of which are marked with green from automatic detection. Where you see arrows moving across the border from white (positive) to black (negative) there's typically little shear, and where you see arrows moving along the border between the polarities there is more shear.

13 minutes ago, Philalethes said:

The way to get an impression of it is to look at the borders between the polarities (black and white), many of which are marked with green from automatic detection. Where you see arrows moving across the border from white (positive) to black (negative) there's typically little shear, and where you see arrows moving along the border between the polarities there is more shear.

Thank you for stumbling upon this and sharing it. Definitely feel like I struck gold with this one.

52 minutes ago, Parabolic said:

Thank you for stumbling upon this and sharing it. Definitely feel like I struck gold with this one.

Im very happy too! i just have problems reading it. whats your impression about current shear?

1 hour ago, MinYoongi said:

Im very happy too! i just have problems reading it. whats your impression about current shear?

At first glance this area here seems to show the most promising shear.

Screenshot_20240510-140854~5.png

2 hours ago, Philalethes said:

The way to get an impression of it is to look at the borders between the polarities (black and white), many of which are marked with green from automatic detection. Where you see arrows moving across the border from white (positive) to black (negative) there's typically little shear, and where you see arrows moving along the border between the polarities there is more shear.

http://jsoc.stanford.edu/data/hmi/sharp/dataviewer/

Absolute treasure trove of data!

47 minutes ago, Parabolic said:

At first glance this area here seems to show the most promising shear.

Yep, also here and here by the looks of it:

shear.png

47 minutes ago, Parabolic said:

Absolute treasure trove of data!

Yeah, there's really vast potential in that data already, and we're just piling up more and more data too. There's so much that could be discovered with the data we've already produced with the right analysis.

If you fetch the seriesname list at the Lookdata tool you'll see how many data series there are, and the SHARP series are just a handful of them. If you e.g. fetch the hmi.sharp_720s series specifically you can also see all the different values available for each record in that series, including the unsigned flux and various others that are used (like the helicity value listed there). There are lots of papers using most of those features to try to predict the evolution of flares and regions in general, which also typically list features that tend to be more useful than others.

Here are e.g. the records for this current region with some of those values, including the unsigned flux; apart from the flux, which tends to increase monotonically over time almost no matter what happens, you can see that most of the activity seems to occur when those other values are increasing, whereas now that they've plateaued or even decreased a bit, the region seems to have mellowed out. There could of course be variation from region to region, it's a small sample size of 1 after all, but it does check out with how most activity occurs when the region becomes more complex.

Edited by Philalethes
bad grandma

A strong X class solar flare is erupting. This one will probably be  a major one.

Edited by Sotiris Konstantis

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