Halo CME Mail

Date: Thu, 13 Sep 2001 22:32:17 +0000 (GMT)

From: Kevin Schenk

Subject: Full Halo CME 2001/09/11

  ------------------------------------------------------------------------

UCMEO 93001 10913 2125/
10911 61454 82042 0001/ 360// 324// 40703
10911 61348 81512 11229 09615 2222/
9999

BT

EIT and Lasco observed a full HALO CME on 2001/09/11.  The event was first
seen in Lasco C2 begining at 14:45 UT as a bright edge over the East limb
and later showing a faint edge of material at all position angles.  The
event came visible in C3 by 15:18 UT.  The speed remained constant through
both fields giving averaged plane-of-sky velocity of 703km/sec measured at
angle 75 degrees.

EIT saw a filament activation/eruption located [N12.4; E29] along the
north transition line of decaying AR9615.  This eruption beginning
at 13:48-15:12 UT followed by a bright arcade of post loops till 18:30 UT.
This event is probably associated with the halo CME in Lasco.

Images and movies of this event are found on Lasco ftp server:

ftp://ares.nrl.navy.mil/pub/lasco/halo/20010911/

Best reguards

Kevin Schenk
EIT and Lasco Operations
NASA-Goddard Space Flight Center, USA