Halo CME Mail

Date: Thu, 13 Dec 2001 22:53:23 +0000 (GMT)

From: Kevin Schenk

Subject: Partial HALO CME on 2001/12/13

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

UCMEO 93001 11213 2220/
11213 61454 92023 2801/ 135// 233// 20535
11213 61424 81436 11418 09733 1222/
99999

BT

EIT and LASCO observed a partial HALO CME event Thursday 2001/12/13.  The
event was first seen in C2 begining at 14:54 UT as a bright symetrical
loop front in the NorthEast.  The emission spanned PA 280-135 degrees.
Slow multiple looping structures with core followed the front.  The
observation for C2 was poor due to a synoptic image gap 15:00-16:18 UT for
calibration program. The event was first seen in C3 begining 16:18-20:30
UT. We calculated the plane-of-sky speed only through C3 field to 535
km/sec at PA 4 degrees. The event was in progress at the first C3 image.

The event was seen in EIT 195A begining at 14:24-14:36 UT as a bright
flare of AR 9733 [N14; E18]. The calibration cut the EIT observation of
the event at 14:48.  Post event loops were still visible at 16:24 when
images resumed.  GOES reports a X6.2 class x-ray flare of AR 9733 at 14:20
UT.  This is probably related to the events seen in EIT and LASCO.

Images and movies are available on the Lasco FTP server at:

ftp://ares.nrl.navy.mil/pub/lasco/halo/20011213/

Best requards,

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