
LASCO Activity Report for
February 22, 2005 SOHO Science Daily Meeting
Planner: K. Schenk, G. Stenborg
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
2005/02/18 (Friday)
Note: Multiple B- and C-class X-ray flares from NOAA AR 10732 all
along the day (around N14W90).
04:30 UT S Pole Diffuse jet-like front.
18:06 UT E Limb Diffuse and not-well -defined front that fades
throughout C2, superposed in the LOS with the
development of a system of loops (the system of loop
starts to be discerned at ~ 17:30 UT).
20:54 UT S West Bright and ragged loop front immediately followed
by another loop front. Apparently, after the
appearance at 22:30 UT on W of a faint and diffuse
loop front, a diffuse and expanding loop front
develops on SW.
2005/02/19 (Saturday)
Note: Still multiple B-class X-ray flares from NOAA AR 10732 until
around midday.
01:42 - 05:18 UT Temporary C3 Data Gap.
04:30 UT S West Expanding loop fronts all above the W-SW-S limbs.
11:06 UT W Limb Very bright loop front with structured interior. Some
infalling blobs in the trailing material. Gusty
outflow. GOES recorded an M3.3 X-ray flare from NOAA
AR 10732 (N12W90) between 10:36 - 11:13 UT with peak
emission at 11:01 UT.
22:30 UT W Limb In the aftermath of previous event, elongated ragged
front that fades throughout C3.
2005/02/20 (Sunday)
04:06 UT W Limb Ragged blob-like fronts with some infalling material.
14:54 - 18:30 UT Temporary Data Gap.
18:30 UT W Limb Lots of small reconexion events in the apparent
trailing material of a potential event which could
have occurred during data gap.
18:30 UT E Limb Bright ragged loop front already under development
after data gap.
19:31 UT NN West Small loop front that quickly fades.
2005/02/21 (Monday)
Note: US federal Holiday --> President's Day.
W Limb Gusty outflow all along the day.
21:36 - 00:00 UT Temporary Data Gap.
2005/02/22 (Tuesday)
10:54 UT WN West Bright and extremely elongated loop-like structure.
Web curator:
K.M.Schenk
NASA Goddard Space Flight Center
Solar Physics Branch / Code 682
Greenbelt, MD 20771