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SOLAR WATCH * Huge X8.2 Flare Sept. 10, 2017! (Updated Daily)
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Hugh M Eye |
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Science nugget: Catching solar particles infiltrating Earth's atmosphere May 31, 2012 by Karen C. Fox (Phys.org) -- On May 17, 2012 an M-class flare exploded from the sun. The eruption also shot out a burst of solar particles traveling at nearly the speed of light that reached Earth about 20 minutes after the light from the flare. An M-class flare is considered a "moderate" flare, at least ten times less powerful than the largest X-class flares, but the particles sent out on May 17 were so fast and energetic that when they collided with atoms in Earth's atmosphere, they caused a shower of particles to cascade down toward Earth's surface. The shower created what's called a ground level enhancement (GLE). full story-- [ link to phys.org] Peace Thanks, Nerdrage, this explains the spike in the neutron monitors someone posted about that night. Surprisingly, they state that this was the first GLE of the current solar cycle. I would've guessed that those two huge proton storms we saw earlier this year produced measurable GLE's as well. This tells me that maybe other factors are playing a role. I found the plots from the ICETOP Neutron Monitor for May 17: [ link to www.bartol.udel.edu] They're also Beta-testing a GLE Alarm which sends you an e-mail alert--sign up here: [ link to www.bartol.udel.edu] PEACE.
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