SOHO/LASCO Halo CME  20130929

COMMENTS: Asymmetric HALO CME  resulting from an eruptive filament located [N23, W25]
                          LASCO velocity:  1025.7 km/sec at  PA311 degrees.  Acceleration:  -15.17
                          Moderate SEP Event.
                        

Halo Alert: halo-message.20130929


Subject: SOHO/LASCO HALO CME 130929

UCMEO 93001 30930 2214/
30929 62212 80318 3111/ 310// 333// 41026
30929 62112 80230 42523 ///// 2112/
99999

PLAIN

SOHO/LASCO observed a HALO CME on September 29, 2013.  Event is first seen
in C2 at 22:12 UT as a loop on the Northwest. A full asymmetric HALO develops
with cavity and core by 23:12 UT.  The event continues into the C3 field beginning
22:30 to 03:18 UT leaving the C3 field at 30 Rsun in the West.  There is
increased proton flux seen in the LASCO C2 and C3 field of view.

Time/height measurements were marked to 3 points in C2 with speeds
of 896.7 Km/sec at position angle 311 degrees. The event is marked to11 points
in C3. Speeds average through both fields to 1025.7 Km/sec at PA 311 degrees.
Acceleration -15.17 m/sec^2.

SDO/AIA : 193A and 304A show activation along a filament beginning  18:18 UT
on disk centered at location [N23, W25]. The filament erupts at 21:12 UT
producing dual ribbon flare with dimming across the West hemisphere and
long duration post arcade.

Shown while analyzing the full resolution AIA 193 data, a bi-pole region of
emerging flux begins development early in the day on 9/29/13.  This region
located [N18, W26] at a barb along the filament is associated with the
eruption of the filament channel. (JHV JHelioviewer movie)

STEREO: Beacon Data
COR2 B, 22:25-00:55 UT asymmetric halo over the West.
Preliminary time/height measure gives 1097.4 km/sec velocity at LE.
EUVI B,  n/a.
COR2 A, 15:54-03:54 UT data gap. In progress, CME out to of FOV.
EUVI B,   n/a.

NOAA reports a long duration C1.2 Xray flare 21:43/23:39/01:03 UT.
GOES shows an increase of proton flux in all three channels with the
increase of particles >10MeV above solar storm levels.

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/2013/130929/

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 304A
20130929_232406_c2rdiff.gif
20130930_004205_c3rdiff.gif
20130929_215407_aia_304.gif






STEREO/COR2 BEHIND
SDO/AIA 193A Diff
STEREO/COR2 AHEAD
20130930_002506_cor2_behind_diff.gif
20130929_220306_aia_193_diff.gif
20130930_042424_cor2_ahead_diff.gif
SDO/AIA 193A

SDO/AIA 193A
20130929_215706_aia_193.gif

20130929_aia_193_JHV_hr.png


SOHO/LASCO C2
20130929_2324_D2_combo.gif
SOHO/LASCO C3
20130930_0130_D3_combo.gif



Time/Height Velocities and Plots

C2/C3
20130929_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