LASCO Activity Report for
January 10, 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





2005/01/07 (Friday)

10:30 UT  EN East	Bright loop front. EIT 195 observes a backsided CME
			starting at 09:48 UT. It fades throughout C3. Some
			infalling material afterward in C2.

21:54 UT  EN East	Ragged loop front that fades close to the inner edge 
			of C3, followed at 23:54 UT by a faint and diffuse
			ragged front on E Limb.

2005/01/08 (Saturday)

03:54 UT  E Limb	Jet- like front. Infalling material to N. Another
			narrow front at ~ 09:54 UT.

06:06 UT  S East	Expanding loop front. Faint extensions can be seen 
			ahead of the event in C3, spanning up to above the S 
			Pole (starting at around 08:42 UT). The whole event
			fades throughout C3. No visible signatures on EIT 195
			running difference images.

06:30 UT  N West	Expanding loop front fainter than previous event on SE
			(and apparently slower). It apparently fades throughout
			C2. No visible signatures of the event on EIT 195
			running difference images.
			
13:54 UT  N Pole	Extremely faint and not-well-defined front developing
			toward NNW, followed at 16:30 UT by faint ragged front.
			An expanding front that later extends all above the N 
			Pole, from NW to NE, appears by around 20:30 - 20:58 UT.
			Also by 20:58 UT, a faint and expanding loop front is 
			seen appearing on NE, though it is difficult to
			disentangle the different structures involved. EIT 195
			show no signatures of the event, except for the release
			expulsion of material on NE starting at around 18:12 UT.
 
17:54 UT  W Limb	Faint and very diffuse elongated front preceding a 
			ragged and expanding and elongated loop-like front 
			(first seen at around 18:54 UT) that fades close to 
			the inner edge of C3.

2005/01/09 (Sunday)

02:30 UT  N East	Bright loop front and twisted trailing structure. EIT
			195 images show a backsided CME starting at around
			01:48 UT on ENE Limb. Mean plane-of-sky speed based
			on C3 data: ~ 600 km/sec at PA ~ 52. Angular span at
			09:18 UT (C3): ~ 70 deg, from PA 19 - 89.

03:54 UT  NN West	Faint loop front that fades throughout C3.

06:06 UT  S West	Jet-like front.

07:31 UT  WS West	Elongated and ragged loop front a little to N of 
			previous event (jet) superposed in the LOS with a 
			narrow and elongated fan-like front. They fade
			throughout C3. 

09:06 UT  E Limb	Bright and wide loop front. Mean plane-of-sky speed
			based on C3 data: ~ 820 km/sec at PA ~ 115. Angular 
			span at 12:42 UT (C3): ~ 130 deg, from PA 40 - 170.
			Many ragged fronts all above the eastern limb (from 
			NE to SE) along the rest of the day. GOES recorded an
			M2.4 X-ray flare from NOAA AR 10719 (S09E70) between
			08:25 - 09:09 UT with peak emission at 08:51 UT. Also 
			a C2.6 X-ray flare between 14:33 - 14:56 UT with peak
			emission at 14:47 UT on the same AR (S09E68) - both
			during a long duration X-ray event. Signs of a wave to 
			S and SSW of the AR on EIT 195 images.

2005/01/10 (Monday)

00:30 UT  ES East	Ragged front immediately followed (to N) by a fainter
			front developing faster. Infalling material on E.
			Another ragged front on ENE.

	11:30 - 14:30 UT	Temporary Data Gap.


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