"Partial-halo CME observed on Mauna Loa" *LINK*

[Peter Kuklok]

Im frischen SEC-Report steht u.a. etwas zum 484er-CME von vorhin.

"Analysis of Solar Active Regions and Activity from 25/2100Z
to 26/2100Z: Solar activity has been high. Region 486 (S15E31)
produced a long-duration X1.2/3n at 26/0654 UTC, with associated
Type II and IV radio sweeps and a partial-halo CME observed on LASCO
imagery with an estimated speed of 1245 km/s. Region 484 (N03W41)
produced a long-duration X1.2/2n at 26/1819 UTC with an associated
Type II radio sweep and a partial-halo CME observed on Mauna Loa
coronameter imagery. The rise in X-ray flux for this flare was
observed at 1721, and 10 MeV proton flux began to rise at the ACE
spacecraft at 1750 UTC. The greater than 10 MeV proton flux at
geosynchronous orbit reached 10 pfu at 1825 and peaked at 332 pfu at
2020 UTC. An 18-degree filament erupted around S18W51 at 0346 UTC,
and a 12-degree filament erupted at N00W55 at 0331 UTC. Both
erupting filaments were observed on EIT imagery, and their
respective CMEs were observed on LASCO imagery. Neither CME appears
to be earth-directed. Regions 484 and 486 maintained their magnetic
complexity, although Region 484 decayed slightly in size. The 10.7
cm flux value was flare-enhanced and is estimated due to solar
activity at the time of the observation."

[Peter Kuklok]

...

[Ulrich Rieth]

Teil IIB vergessen wir aber mal lieber *NM*

[Peter Kuklok]

: Region 486 (S15E31) produced a long-duration X1.2/3n at
: 26/0654 UTC, with associated Type II and IV radio sweeps and a
: partial-halo CME observed on LASCO imagery with an estimated speed
: of 1245 km/s.

Beim PoSen kam ich vorhin übrigens auf einen etwas höheren Wert, nämlich 1310-1350km/s (7.42UT-8.42UT in C3). Unmittelbar zu Beginn dürfte der CME noch deutlich schneller gewesen sein.

Grüße
Peter

[Peter Kuklok]

Die GIF-Anim hat allerdings satte 10.5 MB(!). Trotzdem faszinierend, ein CME von der Erde aus beobachtet.

Grüße
Peter