Halo CME MailHalo CME Mail
Date: Wed, 12 Nov 2003 10:46
From: Gareth Lawrence 
Subject: Full Halo CME on 2003/11/12, backsided




LASCO observed a full halo CME on 2003/11/12. A bright
loop front was first visible in C2 images at 10:54 UT
spanning from the NW to SE; by 11:30 this front had 
developed into a full halo CME. A bright loop front was 
visible from the NW to SE in C3 images at 11:18 UT and 
had developed to a full halo CME by 11:42 UT.

EIT running difference images show evidence for a far 
backsided eruption from 11:00 UT, with peak activity 
at 11:36 UT. This event has therefore been determined 
backsided.

Note that the asymmetry of this CME in the C3 images 
coupled with the EIT signatures are more consistent 
with the likely position of old AR 0488 as opposed to
old AR 0484 which could shortly rotate over the E limb.

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
++