
LASCO Activity Report for
September 3, 2002 SOHO Science Daily Meeting
Planner: K. Schenk, G. Lawrence
Event times are first frame seen in C2 camera unless otherwise noted.
These are preliminary observations for the daily SOHO science discussions.
Final analysis is reported on the Lasco CME list.
An archive of these reports is available.
Points Of Interest
EIT CCD bakeout over the holiday weekend - no regular EIT
observations from ~20:30 2002/08/30 to ~21:00 2002/09/03
LASCO C2 and C3 observations taken at increased cadence
over the weekend: ~ 5 mins and ~15 mins respectively
2002/08/30
03:06 UT W Limb Wide loop front, generally moderately bright
but with substantially brighter central
feature. Front spans ~90 deg, streamers
disrupted in NW and SW, possible extremely
faint extension to N pole
11:30 UT S West Faint ragged loop front, moderately wide,
fades and disintegrates through C2
13:54 UT N East Sequence of ragged loop fronts, initially
quite bright. Fainter loops follow
15:30 UT W Limb Sequence of bright spray-like fronts
21:18 UT N East More ragged loop fronts follow 13:54 event
2002/08/31
01:25 UT S East Narrow fan-like front with cavity
14:05 UT N East Narrow loop front along wide bright
streamer, quite bright
14:05 UT S East Narrow ragged front along faint streamer
2002/09/01
02:05 UT E Limb First of a sequence of faint fan-like fronts
03:10 UT S West Wide bright loop front with cavity and
bright structured core. Extremely symmetric
event, initially very slow. Some trailing
material and fronts
11:05 UT N East Initially very narrow blob-like front expands
through C2, moderately bright
19:40 UT N East Initially fairly bright loop front fades and
disintegrates through C2. Slight core-like
region follows
2002/09/02
16:05 UT S West Faint narrow spray
16:40 UT S East Nebulous ragged loop front with some
trailing material, quite wide
2002/09/03
00:25 UT N East Narrow loop front fades through C2
01:25 UT N East Small bright blob along streamer appears
to catch, brighten and accelerate faint
slow-moving disconnection feature at ~4 Rs
02:05 UT W Limb Ragged loop front disintegrates and fades
through C2
Web curator:
K.M.Schenk
NASA Goddard Space Flight Center
Solar Physics Branch / Code 682
Greenbelt, MD 20771