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
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