Alive and Kicking (X2.0)
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Caption: As if making up for lost time lately, the Sun keeps its active streak going. Active region 9415 produced another X2 event on 12 April 2001 at 10:28 UT. A so-called "EIT wave" could be seen in EIT's 195 Å movie. The associated coronal mass ejection (CME) was first spotted by LASCO at 10:31 UT, evolving into a faint full halo event. The speed was "only" 3 million kilometers per hour, and decelerating.
The shockwave may take 2-3 days to arrive at the Earth. To look for the shock in realtime, look at the SOHO/CELIAS MTOF Proton Monitor page, which gives about half an hour early warning due to SOHO's position closer to the Sun.
- Today's Space Weather from SEC/NOAA.
- SOHO/CELIAS MTOF Proton Monitor
- Geomagnetic data from the University of Tromsø, Norway.
- Our Current Space Weather summary.
- The TRACE spacecraft.
Instruments: Extreme ultraviolet Imaging Telescope (EIT);
Large Angle and Spectrometric Coronagraph (LASCO);
Taken: 12 April 2001.
Picture credit: SOHO/EIT and SOHO/LASCO (ESA & NASA)