Date: Fri, 12 Sep 2003 17:53
From: Gareth Lawrence
Subject: Partial Halo CME on 2003/09/11, frontsided
Status: O
UCMEO 93001 30912 2300/
30911 62206 91018 1261/ 297// 233// 40386
30911 62048 92324 2//// ///// 2112/
99999
PLAIN
BT
LASCO and EIT observed a partial halo CME on 2003/09/11. A narrow
bright loop was first seen in C2 at 22:06 UT in the SE; by 00:30 UT
the front spanned ~170 deg from PA 126-297, though faint in the W.
The front first appeared in the SE in C3 images at 23:18 UT and
reached its maximal extent by 03:18 UT. The mean plane-of-sky speed
was 386 km/s, measured at PA 170 with no compelling evidence for
acceleration.
The CME was probably associated with an eruptive filament which EIT
observed primarily between 20:28 - 23:24 UT, though the reorganisation
of the affected region of the low corona continued for a substantial
period thereafter. The filament extended from S16E24 - S16W11. SEC
records a B7.9 X-ray flare between 20:16 - 00:08 UT with peak emission
at 22:37 UT, which may be associated with this eruption (no spatial
information is given). Both a wave and dimming were observed in
conjunction with this event.
Images and movies will be made available as soon as possible at
ftp://ares.nrl.navy.mil/pub/lasco/halo/20030911
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
+