
LASCO Activity Report for
September 19, 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
Kreutz comet SOHO-351 (disc. X Leprette) in a search of archival
data from 1996/01/21. Only C3 data is available for this date.
Last observed 1996/01/21 at 14:56 UT, at 9.2 Rs, PA 116.
2001/09/18
05:06 UT N East Very faint front with gusty outflow
05:30 UT S West Very faint ragged outflow along streamer
13:31 UT N East Largest of several fairly faint blobs
14:54 UT S West Very faint ragged front, slow
16:54 UT HALO Faint front in N East is full halo CME
by 18:54, though very faint over S Pole.
Slow event soon overtaken by
20:30 UT HALO Narrow bright front in S West is full
halo CME by 21:30, clearly visible all
around C2 occultor. Multiple-loop event
with core and some arcades in S West.
Significantly faster than previous event
2001/09/19
02:54 UT N East Initially narrow blob-like feature widens
to a faint front through C2.
03:54 UT N East Well-defined loop fronts fill large part
of quadrant, fairly bright. Arcades follow
towards N extremeity by 07:31. Slower loops
follow. All S of previous event
07:31 UT S West Fast wide bright front spans ~140 deg by
08:30. Cavity, core in S West, then numerous
prolonged arcades. Probably backsided,
maybe from AR9608?
08:30 UT N Pole Very faint front
Web curator:
K.M.Schenk
NASA Goddard Space Flight Center
Solar Physics Branch / Code 682
Greenbelt, MD 20771