Date: Wed, 3 Dec 2003 18:53
From: Gareth Lawrence
Subject: 'Full' Halo CME on 2003/12/02, frontsided
Status: O
UCMEO 93001 31203 2300/
31202 61026 91442 0001/ 360// 223// 41234
31202 60900 91048 36613 10508 3212/
99999
PLAIN
BT
LASCO and EIT observed a 'full' halo CME on 2003/12/02. A
bright loop front was seen in C2 at 10:26 UT in the SW;
by 11:06 UT this bright front spanned ~150 deg from the
S pole to the NW and had faint extensions arounding the
rest of the C2 occultor. The front first appeared in C3
images in the SW at 11:18 UT and was bright from the S to
NW with faint extension elsewhere by 12:18 UT. The mean
plane-of-sky speed was 1234 km/s, measured at PA 271 with
possible evidence for acceleration through the C2 field
of view but highly linear through C3.
The CME was probably associated with complex solar activity.
Between 09:00 - 11:12 UT EIT observed an eruptive prominence
in the SW, accompanied by two separate flares. SEC records
two flares from AR 0508 between 09:40 - 09:54 UT and
12:47 - 13:22 UT, of magnitude C7.2 and M1.4. Additionally
there was an earlier C3.9 flare from the same active region
between 07:57 - 08:17 UT. The EIT prominence was centered
about S13W65. A substantial dimming was observed to the N
and E of the prominence, centered around N20W12 and
coincidentally timed. This event has therefore been
determined frontsided.
Images and movies will shortly be made available at
ftp://ares.nrl.navy.mil/pub/lasco/halo/20031202
Best wishes,
Gareth Lawrence.
+----------PLEASE NOTE NEW EMAIL ADDRESS-----------+
Gareth Lawrence, grl@grace.nascom.nasa.gov
SOHO-LASCO Operations Scientist,
CUA, MC 682.3, Bldg 26, Rm 001, F: +1-301-286-0264
NASA Goddard Space Flight Center,
Greenbelt, MD 20771. P: +1-301-286-2941
+