Date: Mon, 17 Nov 2003 13:14
From: Gareth Lawrence
Subject: Partial Halo CME on 2003/11/17, frontsided
Status: O
UCMEO 93001 31117 1700/
31117 60926 91442 3301/ 200// 223// 41018
31117 60900 90936 13101 10501 1111/
99999
PLAIN
BT
LASCO and EIT observed a partial halo CME on 2003/11/17.
The event was first observed in C2 at 09:26 UT as a faint
loop front in the SE limb; by 09:50 UT a bright loop front
filled the SE quadrant and by 10:50 UT the front spanned
~230 deg from PA 330 - 200, albeit faint in the N. The
front first appeared in C3 images at 10:42 UT with maximal
coverage of the C3 occultor by 11:18 UT. The mean plane-of-sky
speed for this event was 1085 km/s at PA 155, with possible
evidence for modest deceleration.
The CME was probably associated with an M4.2 X-ray flare
observed by EIT between 09:00 - 09:36 UT, centered at
N01E31 with peak emission at 09:12 UT. GOES records this
flare from AR 0501 between 08:55 - 09:19 UT with peak
emission at 09:05 UT. A modest EIT wave and possible
slight dimming were observed in association with this
event. This event has therefore been determined frontsided.
Note that filament channels to the S and W of the active
region were activated during this event.
Movies and images of this event will shortly be
available at:
ftp://ares.nrl.navy.mil/pub/lasco/halo/20031117
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
+