UCMEO 93001 10607
1730/
10607 60649 91231 2521/ 251// 233// 40996
10607 60619 80648 35322 11226 1112/
99999
PLAIN
SOHO/LASCO observed a full HALO CME on June 07, 2011. Event is
first seen in
C2 at 06:49 UT as a bright loop over the west hemisphere already to 3.3
Rsun.
The impulsive front expands to a full halo by 07:33. The event
continues
into the C3 field beginning 06:56 to 12:31 UT out to the edge of view
at 30 Rsun
which was also the last frame before entering a DSN gap period. This
event has a
considerable amount of proton emission seen in the white light images.
Time/height measurements were marked to 3 points in C2 with speeds of
1062.1 Km/sec
at position angle 268 degrees. The event is marked to 13 points in C3
where it
slightly decelerates. Speeds average through both fields to 996.1
Km/sec at
PA 258 degrees. Acceleration -12.65 m/sec^s.
SDO/AIA shows a flare of AR 11226 in the SW quadrant [S22, W53]
beginning 06:19-06:48 UT with a dimming and wave across the South. The
flare triggered a large filament adjacent to the AR on the west to
erupt.
NOAA reports a long duration M2.5 X-ray flare beginning at 06:16-06:59
UT.
The proton flux in the 10 and 50 MeV range are above "storm levels".
STEREO COR2 A & B sees large CMEs with scattered material beginning
06:54 UT.
EUVI A 195 shows AR 11226 in the south east with a flare at 06:25-06:45
UT
with bright impulsive ejecta.
This is most probably the cause of the full HALO event seen in LASCO.
The observation of this event is considered 'GOOD'. This CME is
determined a FRONTSIDED event.
Images and movies and time/height information for this event is
available on the web at:
http://umbra.nascom.nasa.gov/lasco/observations/halo/2011/110607/
Best regards,
Kevin Schenk
Solar Heliospheric Observatory (SOHO)
EIT and LASCO Operations
NASA-Goddard Space Flight Center, USA
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