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そのソーラー・オービターの観測によると、この時のフレアはX12にもなったと。地球に低緯度オーロラを引き起こしたAR（活動領域）13664によるものと。
メニューを開くHuge flare! Although not visible to Earth, old AR 13664 (responsible for recent solar storms) just popped off its biggest flare yet! Measured by the Solar Orbiter spacecraft behind the Sun, the flare is estimated as an X12-class. This flare also caused a huge CME behind the Sun.
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パーカー・ソーラープローブとベピコロンボからも同様のデータがくるかもと。（3日前の情報） #ParkerSolarProbe #BepiColombo
Wow, the halo CME that I reported as a far side event was a direct hit at @ESASolarOrbiter, with big fluxes of energetic particles. Similar data may come from BepiColombo and Parker Solar Probe. What are the coordinates of the flare by STIX or EUI?
