Waspie_Dwarf Posted October 26, 2013 #1 Share Posted October 26, 2013 (edited) NASA's SDO Sees Sun Emit a Mid-level Solar Flare - Oct. 24, 2013 The sun emitted a mid-level solar flare that peaked at 8:30 pm EDT on Oct. 23, 2013. Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can disturb the atmosphere in the layer where GPS and communications signals travel. Such radiation can disrupt radio signals for as long as the flare is ongoing, anywhere from minutes to hours.Read more... Fast CME Accompanied Mid-level Solar Flare UPDATE: The M9.4 flare on Oct. 23, 2013, was associated with a coronal mass ejections or CME, a solar phenomenon that can send billions of tons of particles into space that can reach Earth one to three days later. These particles cannot travel through the atmosphere to harm humans on Earth, but they can affect electronic systems in satellites and on the ground.Read more... Sun Emits Second Solar Flare in 2 Days The sun emitted a significant solar flare, peaking at 4:01 a.m. EDT on Oct. 25, 2013. Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can disturb the atmosphere in the layer where GPS and communications signals travel. This disrupts the radio signals for as long as the flare is ongoing, anywhere from minutes to hours.Read more... Sun Emits Third Solar Flare in 2 Days UPDATE: Another solar flare erupted from the same area of the sun on Oct. 25, 2013,which peaked at 11:03 a.m. EDT. This flare is classified as an X2.1 class.Read more... Edited October 28, 2013 by Waspie_Dwarf corrected tags. Link to comment Share on other sites More sharing options...
Grandpa Greenman Posted October 27, 2013 #2 Share Posted October 27, 2013 While looked at these articles I thought I wonder what the guy who first saw a solar flare must have thought about it. I was on Sept 1 1859. Here is a link to Mr. Carrington's notes. http://adsabs.harvard.edu/abs/1859MNRAS..20...13C Link to comment Share on other sites More sharing options...
Waspie_Dwarf Posted October 29, 2013 Author #3 Share Posted October 29, 2013 Flashing FlareThe Sun unleashed a good-sized (M9 class) flare from an active region facing Earth (Oct. 24, 2013). The flare burst with several characteristic flashes before erupting in a small cascade of coils as the magnetic field in that area regrouped itself. The video, in extreme ultraviolet light, covers about 2.5 hours. The still was taken about 00:30 UT. The elongated, white effect you see is not a flare covering a large part of the Sun: it's an instrumental effect on the chip, only a couple of millimeters in size. Another nearby active region to the upper right spit out a few smaller flares just before the main event left of center. There does not seem to be a substantial coronal mass ejection associated with this event. Credit: Solar Dynamics Observatory/NASASource: NASA/SDO - Pick of the week Link to comment Share on other sites More sharing options...
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