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