LASCO Activity Report for
January 13, 2006 SOHO Science Daily Meeting

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

Venus entered the C3 FOV on 2005/01/09 @ ~ 09:42 UT from the left. It is 
expected to be in the C3 FOV through Jan. 17.

2006/01/12 (Thursday)

10:54 UT  N East	Faint and diffuse jet-like front that quickly fades.

15:30 UT  SS East	Diffuse brightening starts to be seen in C2. A bright 
			and expanding loop front follows at 15:54 UT on the S
			Pole. Some trailing material, in particular some
			relatively narrow loop fronts on SSW starting at around
			17:54 UT. By the end of the day, the event seems to 
			cover completely the C2 occulting disk (the LE on S 
			well past the outer edge of the C2 FOV, while very 
			weak signal barely above the occulting disk on N). The
			event is first seen in C3 at 16:42 UT just appearing
			above the SSE. The bright loop front is well seen on 
			the S by 17:18 UT. By 23:18 UT the event spans in the 
			C3 FOV about 215 deg (from PA ~ 065 - 280). Afterward,
			the legs become too faint to determine whether the 
			C3 occulting disk gets completely covered. The mean
			plane-of-sky speed of the LE of the event at PA 170 
			was ~ 475 km/sec, showing an slight acceleration. GOES
			recorded no significant X-ray activity during the day
			(below the A level). Likewise, EIT 195 images do not 
			show any significant event on the disk by the time 
			prior to the LASCO C2 event. Therefore, the event has
			been determined as at least a Partial Halo Event, most
	 		likely backsided, based on the lack of X-ray (GOES)
			and EUV (EIT 195) activity.

2006/01/13 (Friday)

	  S Pole	Some narrow ragged fronts (plus gusty outflow) during 
			the day, rotating toward SE as they appear.

00:54 UT  W Limb	Bright loop front with some very faint and diffuse
			extensions to N, and a twisted --like circularly
			structured-- interior. The event becomes visible in 
			C3 at 02:42 UT, appearing above the W Limb. Its angular
			extent at ~ 07:42 UT is about 70 deg (from PA ~ 240 -
			310). EIT 195 shows the lift-off of a filament located 
			at around S03W16 by ~ 23:48 UT on previous day).

Last C2 image available by the time of writing: 15:06 UT.