Date: Mon, 3 Nov 2003 19:06
From: Gareth Lawrence
Subject: Full Halo CME on 2003/11/02, frontsided
Status: O
UCMEO 93001 31103 2300/
31102 61730 82019 0001/ 360// 233// 41826
31102 61712 91800 35620 10486 1111/
99999
PLAIN
BT
LASCO and EIT observed a full halo CME on 2003/11/02.
The event was first observed in C2 at 17:30 UT as a bright
loop front in the SE; by 17:54 UT the front had developed
into a full halo CME, though rather faint in the NE.
The front first appeared in C3 images at 17:42 UT with
full coverage of the C3 occulting disk by 18:18 UT. The
mean plane-of-sky speed for this event was 1826 km/s at
PA 272, with evidence for strong deceleration. Please note
that data beyond ~15 Rs for this event are poor due to the
proton contamination.
The CME was probably associated with an X8.3 X-ray flare
observed by EIT between 17:12 - 18:00 UT, centered at
S20W56 with peak emission at 17:24 UT. GOES records this
flare from AR 0486 between 17:03 - 17:39 UT with peak
emission at 17:25 UT. A large EIT wave, and dimming,
were observed in association with this event. This
event has therefore been determined frontsided.
Movies and images of this event will shortly be
available at:
ftp://ares.nrl.navy.mil/pub/lasco/halo/20031102
and note that many images, particularly C3, are severely
degraded due to the proton storm.
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
+