Halo CME Mail

Date: Mon, 25 Nov 2002 15:03

From: Gareth Lawrence

Subject: Partial Halo CME on 2002/11/24, frontsided

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UCMEO 93001 21125 2000/
21124 62006 90318 2651/ 065// 223// 41042
21124 61913 92112 13417 ///// 2222/
99999

PLAIN

BT

LASCO and EIT observed a partial halo CME on 2002/11/24. The
event was first observed in C2 at 20:06 UT as a bright loop
front over the NE limb; by 20:58 UT the front spanned 160 deg
from PA 265 - 65, with further very faint extensions in the
S hemisphere. The front first appeared in C3 at 20:42 UT with
maximal coverage of the C3 occultor by 21:42 UT. Note that
the emission in the S hemisphere is brighter in C3 than in C2.
The mean plane-of-sky speed for this event was 1042 km/s at
PA 10, with moderate acceleration possible through the fields
of view.

The CME was probably most associated with an eruptive prominence
observed by EIT between 19:13 - 21:12 UT centered around
N17E34. SEC records a C6.4 X-ray event from AR10198 at S17W37
between 2014 - 2057 UT with peak emission at 2029 UT but the
EIT data suggest that a portion of the X-ray flux may be
due to the post-CME loops. It is possible that a slight
dimming, and an even slighter EIT wave, could be identified
in association with this event, but both were very limited.

Movies and images of this event are available now at:

ftp://ares.nrl.navy.mil/pub/lasco/halo/20021124

Best wishes,
        Gareth Lawrence.

++
| Gareth Lawrence,                   E-mail:grl@kreutz.nascom.nasa.gov |
| SOHO-LASCO Operations Scientist,                                     |
| CUA, Mail Code 682.3,                                                |
| NASA Goddard Space Flight Center,      Phone:  +1-301-286-2941       |
| Building 26, Room 001,                         +1-301-286-3447       |
| Greenbelt, MD 20771.                   Fax:    +1-301-286-0264       |
++