Doppel-CME am 19.12. ?

[lutz schenk]

Habe mir eben mal den Lasco C3-Mpeg angesehen. (http://star.mpae.gwdg.de/)

Dort sehe ich zwei Full-Halo's.
Der erste am 18.12. taucht erstmals im Frame 23:18UT auf,
der zweite am 19.12 im Frame 9:42UT.

Eigenartigerweise habe ich nirgends etwas über diese CME's gelesen.
Auch die NOAA-Event-Liste zeigt im jeweils zugehörigen Zeitraum nur C-Class-Events und keine Radio-Sweeps. Waren diese CME's backsided?

Weiss jemand etwas dazu ?

Gruß Lutz

[Heiko]

Coronal mass ejections (CMEs)
December 18: A full halo CME was observed in LASCO C3 images beginning just before midnight. Its source is not known and may have been backsided.

December 19: A full halo CME was observed in LASCO C3 images from about 08h UTC. The source of this CME is uncertain and may have been backsided. Another full halo CME was observed late in the day after an M2.7 event in region 10229. This CME (which affected a fairly large part of the solar disk, see this EIT 195 difference image) was first observed in LASCO C2 images at 22:06 UTC off of the northwest limb and will likely reach Earth sometime between late on December 21 and early afternoon on December 22. Active to major geomagnetic storm conditions are possible.

Quelle: dxlc

Gruss Heiko