SOHO/LASCO Halo CME  20130305
COMMENTS: BACKSIDE HALO CME  resulting from a flare of an AR located [N13, E141] seen in STEREO/EUVI B
                          LASCO velocity:  1048.7 km/sec at  PA 90 degrees.  Acceleration:  09.19
                        

Halo Alert: halo-message.20130305


SOHO/LASCO HALO CME 130305 BACKSIDED

UCMEO 93001 30307 1630/
30305 60336 80818 0902/ 089// 133// 31049
30305 60312 80409 ///// ///// 1112/
99999

PLAIN

SOHO/LASCO observed a HALO CME on March 05, 2013.  Event is first seen in
C2 beginning 03:36 UT with a bright loop over the East.  The event expands
to a full asymmetric HALO CME by 04:12 UT.  The event continues into the C3 field
beginning 03:54-08:18 UT where it leaves the field of view in the East.

Time/height measurements were marked at 4 points in C2 with speeds of
888.5 Km/sec at PA 90 degrees. The event is marked to 14 points in C3. 
Speeds average through both fields to 1048.7 Km/sec at PA 90 degrees.
Acceleration 09.19 m/sec^2.

SDO AIA 193 shows backside emission 03:12-04:09 UT in difference images.
Material is seen along the East limb and above the North pole.

STEREO: BEACON data
COR2 B, 02:25-04:25 UT data gap.  Full symmetric halo in progress at first
frame. Increased proton emission (SEP).
Preliminary time/height measure gives 1081.5 km/sec velocity at LE.
EUVI B 195, 02:26-03:46 UT eclipse outage.  Bright flare of AR near disk
center in progress at first frame at location [N13, E141].  The flare
produces a dimming and a wave which spans the disk in EUVI and a post arcade.
COR2 A, 01:39-05:24 UT data gap. Asymmetric HALO at the edge of field at
first frame.
EUVI A 195, 01:45-05:35 UT data gap. n/a

The observation of this event is considered 'FAIR'. This CME is determined BACKSIDED.
The vast expansion of the wave of the CME does produce minimal emission which
is seen on disk along the East limb.
 
Images and movies and time/height information for this event is available on the web at:

http://umbra.nascom.nasa.gov/lasco/observations/halo/2013/130305/

Best regards,

Kevin Schenk
Solar Heliospheric Observatory
EIT and LASCO Operations
NASA-Goddard Space Flight Center, USA

BT



SOHO/LASCO C2 Diff
 SOHO/LASCO C3 Diff
 SDO/AIA 193 Diff
20130305_042405_c2rdiff.gif
 20130305_070605_c3rdiff.gif
 20130305_033306_aia_193_diff.gif






STEREO/COR2 BEHIND
 STEREO/EUVI 195 BEHIND
 STEREO/COR2 AHEAD
20130305_045509_cor2_behind_diff.gif
 20130305_035617_euvi_195_behind_diff.gif
 20130305_065424_cor2_ahead_rdiff.gif
STEREO/EUVI BEHIND
 STEREO/EUVI AHEAD
 STEREO/EUVI AHEAD
20130305_042617_euvi_195_behind.gif 20130305_060530_euvi_195_ahead_diff.gif 20130305_074530_euvi_195_ahead.gif


SOHO/LASCO C2
20130305_0424_D2_combo.gif
SOHO/LASCO C3
20130305_0706_D3_combo.gif


Time/Height Velocities and Plots

C2/C3
20130305_c2c3_ht.gif

Click on Links below for additional information.

MPEG Movies


LASCO Software IDL Save Files (.mvi)




  • Please, send questions and comments to Kevin Schenk