Flare and CME Combo (April 8, 2004)
Hi-res TIF image (2.6M)
As often happens, both a flare and a coronal mass ejection (CME) occurred April 6, 2004, nearly simultaneously. The flare can be observed as Active Region 588 gradual brightens over a period of a few hours to a white point, then its intensity subsides. On the scale for measuring flares this was an M2.4, more of a moderate flare event. The video shows the full disk of the Sun in EIT 195Å from 11:00 to 16:48 UT. There is a reasonable chance that the CME cloud will impact Earth around April 8 and perhaps generate some auroral activity.
The CME was probably associated with this X-ray flare. The CME, called a halo CME because the material appears all around the Sun as if in a halo, hurled a cloud of particles in the general direction of Earth. It is difficult to see with the EIT instruments, but the expanding cloud can be observed in both of the LASCO instruments (not shown here). Please visit our Newsroom for press releases and media coverage.
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