SOLAR WATCH * Huge X8.2 Flare Sept. 10, 2017! (Updated Daily)

good morning, team!

now that regions 1900 and 1893 are nearing the western limb, it's about time for our typical "too late" flares. Let's keep an eye out today.

Nice site for how to watch ISON on the different satellites.

[link to stereo-ssc.nascom.nasa.gov]

still looks like an eye to me

I think I've found the answer! But I've forgotten the question, LOL.

Speaking of 'connecting the dots'...I'm learning something new today about the magnetic structure of sunspots...has anyone ever heard of UMBRAL DOTS?

Umbral Dots-

The strength of the magnetic field inside umbral dots has been a somewhat controversial subject, with some works finding no large differences between umbral dots and the umbral background (Lites et al., 1989; Tritschler and Schmidt, 1997), and other works finding a clear reduction of the field strength both in central and peripheral umbral dots (Wiehr and Degenhardt, 1993; Socas-Navarro et al., 2004; Riethmüller et al., 2008a). However, as pointed out by the the latter works this could again be -dependent, with the differences in the magnetic field being small a few hundred kilometers above , but fairly large close to this level. Here the difference can be such that the magnetic field inside the umbral dot is only a few hundred Gauss (see Figure 21). (snip)

The lower magnetic field inside umbral dots mentioned in Section 3.1.2 is a direct consequence of the convective motions described here. In the sunspot umbra, convective motions push the magnetic field lines towards the boundary of the convective cell, thereby creating a region where the vertical component of the magnetic field vector is strongly reduced. Since the ambient magnetic field is vertical, this automatically yields a very small field inside the umbral dot. At the top of the convective cell the magnetic field forms a cusp or canopy, preventing the material from continuing to flow upwards. The pile-up of material at this point creates a region of locally enhanced density, which is responsible for the appearance of the central dark lane inside umbral dots (Schüssler and Vögler, 2006). (snip)
[link to solarphysics.livingreviews.org]

I don't even know if this is related to what we're witnessing, but it's a fascinating read nonetheless. I've never come across this before and the solar physics here may be over my head, so anyone who enlighten us please chime in.

Here's a basic intro to magnetograms:

[link to solar-center.stanford.edu]

And a huge list of links from Stanford Solar Center, many of which are new to me:

[link to solar-center.stanford.edu]

[link to www.swpc.noaa.gov]

If this produced a CME, ISON will get a beating!

X1 Max

Whoah! Where did that come from... The sun was so quiet..

Whoah! Where did that come from... The sun was so quiet..

We can thank the AC from the Netherlands for bringing it to our attention. Heh.

Still LDE we can expect some CME from this. It's not impulsive!

good morning, team!

now that regions 1900 and 1893 are nearing the western limb, it's about time for our typical "too late" flares. Let's keep an eye out today.

I guess you were right about that one!

Hi mang! Even quieter than I thought it would be. Sol's snoozing. (I'm teasing sun into flaring, lol)