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BREAKING 🚨: The Sun unleashed an intense X-class solar flare that's triggering radio blackouts across Australia A CME was also released, but early analyses of satellite coronagraph imagery suggest it's not Earth-directed

232,671 görüntüleme • 7 ay önce •via X (Twitter)

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*SEVERE geomagnetic storm possible with U.S. aurora borealis display* *Northern lights possible at mid-latitudes early Sunday morning or Sunday night* *Specifics TBD – map coming later today* On Friday evening Eastern time, a major solar flare occurred from sunspot #4100. A sunspot is a bruise-like discoloration on the sun that throbs and pulsates with energy. Following the solar flare, which is a flash of light and radiation, a significant CME — or coronal mass ejection — was hurled directly toward Earth. Imagine a shockwave of magnetism and high-energy particles rippling through space like an interstellar tsunami. It’s heading for us at speeds around 1,200 miles per second — that’s very fast! We know it’s Earth-directed because our sensors indicate a “full halo” CME. See the solar material appearing to fan out in all directions? That’s an indicator it’s Earth-bound. It’s like if a train is coming right at you — you’d only see the train getting bigger. Once this electromagnetic shockwave reaches Earth, the energy will be absorbed and dissipated by our magnetic field. It will be transformed into visible light — the aurora. Since there’s a LOT of energy, we’ll probably get the aurora borealis (the northern lights) down to the mid latitudes. This could mean parts of the central United States, the Midwest, the Mid-Atlantic and perhaps as far south as northern California. There’s even a chance that parts of the Mid-South could see the aurora IF a direct impact occurs and the orientation of Earth’s magnetic field cooperates. Scientists at the Space Weather Prediction Center in Boulder, Colorado are working to iron that out.

Matthew Cappucci

10,381 görüntüleme • 1 yıl önce

🚨 PARKER SOLAR PROBE JUST FOUND HIGH-ENERGY PARTICLES NEAR THE SUN THAT NO MODEL PREDICTED AND WE DON’T KNOW HOW THEY GOT SO ENERGETIC. During its close passes through the solar corona, NASA’s Parker Solar Probe detected protons accelerated to energies around 400 keV roughly 1,000 times higher than current models of magnetic reconnection at the heliospheric current sheet could explain. The particles appear to be trapped and energized inside magnetic islands that form and merge during reconnection events at the current sheet (the vast surface where the Sun’s magnetic field flips polarity). This mechanism was not expected to produce such high energies so close to the Sun. Why this matters: • It reveals a previously unknown or underestimated source of energetic particles right in the solar corona • Existing models of solar energetic particles have focused mainly on shocks from coronal mass ejections — this suggests reconnection can also be a powerful accelerator • The same process may be contributing more to coronal heating than previously calculated • It has implications for space weather forecasting, since these particles can affect spacecraft and astronauts The deeper implication: Parker is showing us that the physics of the near-Sun environment is more energetic and complex than our models assumed. Magnetic reconnection long known as an important process appears capable of accelerating particles to surprisingly high energies through the merging of magnetic islands. This doesn’t just tweak our understanding of the Sun; it may force revisions in how we model particle acceleration across many astrophysical environments. We’re still in the early stages of understanding what Parker is revealing, but it’s already clear that the corona is more violent and dynamic than we thought. How do you think this discovery might change our models of space weather or solar physics in the coming years? Follow for more updates from Parker Solar Probe and the evolving picture of our Sun.

TheNewPhysics

16,192 görüntüleme • 23 gün önce

🚨 Aurora Alert! 🚨 Hey everyone, a Coronal Mass Ejection (CME) from the Sun is heading our way, potentially sparking strong aurora displays tonight into tomorrow (Nov 7-8). NOAA predicts arrival of the CME around midnight UTC on Nov 7, but add +/- 7 hours for uncertainty. The CME we are concerned with specifically launched due to an M7.4 CME produced by AR 4274. In coronagraph imagery, a full halo eruption iswasclearly seen. This is how we know this particular eruption is coming at us. When it will hit and how strong it will be are not things we can predict until we see the shockwave detected by satellites close to Earth (ACE, DSCOVR at the L1 point). The forecast shows possible G3 storming, and there are multiple CMEs on the way besides the main arrival around midnight on Nov 7. There is also a coronal hole that may enhance and add additional complexity to the situation, affecting arrival times of the CME(s). Conditions need to align for the best-case scenario to play out. The CME needs to hit (most models have a high % chance of this happening, but you never know), and the Bz needs to be southward for some time for conditions to ramp up. The auroral ovals may expand to lower latitudes, and chasers above the 45th parallel may see auroras all night long. During substorms, the aurora "explodes" across the sky and becomes bright and tall. These explosive bursts push the northern lights higher in the sky, making them appear further equatorward. Download my free e-book and check my blog for substorm info: E-book: Substorms: Your aurora apps will likely not tell you when a substorm is occuring, but these times are VERY important since we have a full moon. Without a substorm, you may not be able to see the aurora well. To track substorm activity, I use the GOES magnetometers. I have a tutorial about how to use these data on my website: . A few aurora apps/websites may help you track substorms. For example, the Glendale App issues alerts when substorms are occuring: . This app has a bit of a steeper learning curve compared to others, but it provides useful alerts for catching brief intensifications of aurora. I also like Norlys ( and Aurora Notice ( Webcams are probably the MOST helpful resources, though. I have a large list of cameras all around the world and the northern U.S. on my website: . If you see the aurora on a webcam near you, it is out at your location, too. The Maine webcam in particular is great to get a "feel" for how aurora might shape up across the Lower 48. I always have that one pulled up as sun sets on the east coast to see if aurora can immediately be seen on the northern horizon. Keep following for more updates on this event. I am at a workshop today until 5 pm MST then traveling back to Calgary on my way to the Aurora Summit, so be patient with my updates. I am working as fast as I can :) Thanks!

Vincent Ledvina

24,377 görüntüleme • 8 ay önce