Date: Mon, 24 Sep 2001 22:20:45 +0000 (GMT)
From: Kevin Schenk
Subject: Full HALO CME on 2001/09/24
Status: O
UCMEO 93001 10924 2100/
10924 71030 91442 1051/ 104// 333// 52231
10924 60912 81400 22718 09632 4122/
99999
BT
All
EIT and Lasco observed a full HALO CME on 2001/09/24. The event first
seen in C2 at 10:30 UT Monday Sept 24, 2001 as a large loop front over the
SE limb at PA 120 degrees. At this time it was approx 2.5Rs into the
field. Due to the speed we only have one (1) frame to calculate with. C3
sees the event at 10:42 UT with the front over the same area developing to
a full 360 degrees with a core and cavity over the East hemisphere. The
"averaged" plane-of-sky speed through both C2 and C3 gives 2220 km/sec at
PA 105 degrees. This was showing acceleration through C3. This event
produced Proton emission seen in the white light images.
EIT observed a CME starting in AR9632 located at [S18; E27] at 09:12 UT.
As a typical eruption was in progress an x-ray flare occured in the same
region with first frame at 10:14 UT and a X2.6 class flare is reported in
GOES at this time. A large bright event with a SSE progression and EIT
wave seen along North and South directions. Later, an expanding arcade of
post loops are active till 14:00 UT. This event is probably associated
with the HALO CME seen in Lasco.
Images and movies are available on the Lasco FTP servers at:
ftp://ares.nrl.navy.mil/pub/lasco/halo/20010924/
Best Reguards,
Kevin Schenk
EIT and LASCO Operations
NASA-Goddard Space Flight Ce