
LASCO Activity Report for
September 21, 2001 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
None today
2001/09/20
00:30 UT N East Bright loop front fills quadrant. Spans ~150 deg
by 03:30
05:30 UT E Limb Bright streamer disrupted, slow front leads
slow loops and bright core over E limb.
Slightly faster faint loop front extends
down over E limb. Prolonged outflow
05:30 - 08:30 UT Data gap - unrecoverable
08:30 UT N East Bright front along streamer, already in
progress. Prolonged outflow including
arcades
13:31 UT W Limb Bright loop front along streamer fades
through C2
13:31 UT N East Wide bright front with cavity, complex core
and arcades
14:06 UT S Pole System of faint loop fronts
19:31 UT Partial Fairly slow well-defined loop front first
Halo appears in N West, eventually spans ~160 deg
21:30 UT W Limb Narrow bright front along streamer, quite slow
23:06 UT N West Core-like material emerges along streamer
following very slow loops over a prolonged
period. Arcades follow next day
2001/09/21
00:30 UT N Pole Faint loop front, quite wide
00:54 UT E Limb Narrow ragged front along streamer, some
continued outflow follows
03:54 UT N East Sequence of faint narrow ragged loop fronts.
Similar event at 07:54. Slower loops follow
at 09:06
08:54 UT S East Wide bright loop front with cavity and bright
complex core. Numerous arcades follow
Web curator:
K.M.Schenk
NASA Goddard Space Flight Center
Solar Physics Branch / Code 682
Greenbelt, MD 20771