Halo CME 20130515
|Subject: SOHO/LASCO HALO CME 130515
UCMEO 93001 30515 1740/
30515 60148 80518 0701/ 069// 333// 41511
30515 60124 80155 16412 11748 1112/
SOHO/LASCO observed an asymmetric HALO CME on May 15, 2013. Event is first seen in
C2 at 01:48 UT as a bright loop with cavity and core on the East. The event expands
with extensions to a full HALO CME by 02:48 UT. The event continues into the C3
field beginning 02:06 to 05:18 UT leaving the C3 field of view at 30Rsun.
Time/height measurements were marked to 3 points in C2 with speeds of 1471.9 Km/sec
at position angle 70 degrees. The event is marked to 7 points in C3. Speeds average
through both fields to 1511.2 Km/sec at PA 70 degrees. Acceleration 42.46 m/sec^s.
SDO/AIA 193/211/304 show a flare of AR 11748 at location [N12, E64] beginning
01:24-02:12 UT producing a faint dimming in the Northeast and North direction
and a wave over the East hemisphere.
STEREO: BEACON Data
COR2 B, 01:54-03:39 UT expanding asymmetric HALO CME (West).
Preliminary time/height measure gives 1940.0 km/sec velocity at LE.
EUVI B, 00:25-01:55 UT flare of AR 11748 crossing the limb in the NW.
COR2 A, 20:54-02:55 UT data gap. At first frame, event in progress to
9.7Rsun, symmetric HALO CME.
EUVI A, 20:55-02:55 UT data gap. n/a
NOAA reports a X1.2 Xray flare 01:25/01:48/01:58 UT from AR 11748
at location [N11, E64] with increasing proton flux of 10 and 50 MeV with
>10MeV above storm levels at the time of this alert.
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:
Solar Heliospheric Observatory
EIT and LASCO Operations
NASA-Goddard Space Flight Center, USA
|SOHO/LASCO C2 Diff
||SOHO/LASCO C3 Diff
||SDO/AIA 193A Diff