LASCO Activity Report for
January 4, 2005 SOHO Science Daily Meeting

Planner: K. Schenk, G. Stenborg

Event times are first frame seen in C2 camera unless otherwise noted.
These are preliminary observations for the daily SOHO science discussions.
Final analysis is reported on the Lasco CME list.
An archive of these reports is available.


Points Of Interest





2005/01/03 (Monday)

	  W Limb	Infalling material all along the day. Some small 
			blobs coming out.

04:54 UT  E Limb	Very diffuse and faint brightening develops, extending
			up to the N Pole. By 05:30 UT, it is followed on ESE 
			by an expanding ragged loop front. Structures on N are
			seen to be pushed toward NNW. By 06:54 UT another faint
			loop front follows, also on ESE. GOES reported a C3.8
			X-ray flare from NOAA AR 10715 (N05E07) between 
			04:02 - 04:48 UT with peak emission at 04:22 UT. C3
			shows a very faint and wide CME developing toward ESE
			(first seen at 07:42 UT).

17:30 UT  SS West	Ragged and elongated loop front, barely visible in C3.

23:30 UT  W Limb	Fan-like front preceeding at 00:30 UT on next day
			a kind-of sprayy-like front. A very faint curved
			structure precedes their development by 19:31 UT 
			on WNW. 
	

2005/01/04 (Tuesday)


09:30 UT  WN West	Brigh loop front and inner core with faint extensions
			to N and S. EIT 195 images show a prominence lift-off
			starting at around 08:36 UT, very close to the W Limb.
			Big and clear Limb CME signatures.

12:54 UT  S Pole	Extremely faint (barely visible) and diffuse signatures
			of a CME well recorded by EIT 195 between 10:48 - 11:48
			UT, characterized by a dimmimg in the region delimited 
			by NOAA AR 10715, 10716, and trailing part of 10715.
			After 11:00 UT the dimming spreads to N and W of AR
			10715. Also an important intensity disturbance (wave)
			developing mainly toward W and S of the AR. GOES 
			reported already 3 C-class flares in the day from NOAA 
			AR 10715, the last one being a C7.6 X-ray flare 
			(N04W11) between 10:51 - 11:31 UT with peak emission 
			at 11:12 UT (this is the one associated with the 
			dimming and wave mentioned above).


Web curator: K.M.Schenk
NASA Goddard Space Flight Center
Solar Physics Branch / Code 682
Greenbelt, MD 20771