Halo CME Mail

Date: Mon, 11 Nov 2002 17:48

From: Gareth Lawrence

Subject: Partial Halo CME on 2002/11/09, frontsided

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UCMEO 93001 2111 2300/
21109 61331 91742 0901/ 285// 223// 41757
21109 61313 91348 32711 10180 1112/
99999

PLAIN

BT

LASCO and EIT observed a partial halo CME on 2002/11/09. The
event was first observed in C2 at 13:31 UT as a bright loop
front over the SW limb; by 13:54 UT the front spanned 195 deg
from PA 90 - 285, with possible very faint extensions in the
NE. The front first appeared in C3 at 13:42 UT with maximal
coverage of the C3 occultor by 14:42 UT. The mean plane-of-sky
speed for this event was 1757 km/s at PA 242, with slight
acceleration possible through the fields of view.

The CME was probably most associated with an M4.6 X-ray flare
in AR0180. GOES records this flare between 13:08 - 13:36 UT
with peak emission at 13:23 UT, centered on S12W29. EIT
observed the flare between 13:13 - 13:36 UT with peak emission
at 13:25 UT centered on S11W27. Both an EIT wave and dimming
were associated with this event, both largely directed to the
S and E of the active region and flare.

Movies and images of this event are available now at:

ftp://ares.nrl.navy.mil/pub/lasco/halo/20021109

Best wishes,
        Gareth Lawrence.

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| 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       |
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