LASCO Activity Report for
January 26, 2007 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

2007/01/25 (Thursday)

06:54 UT  E Limb	Wide and very bright loop front. By 08:30 UT, faint
			and diffuse extensions surround the C2 occulting disk
			(LE on E already well past the outer edge of C2). Much
			gusty outflow afterward on E. The event was first seen
			in C3 at 07:42 UT, all above the E limb with shock
			signatures to N and S, which seems to surround the
			C3 occulting disk by 08:42, though the signal on the 
			western hemishere is extremely faint to be certain.
			By 09:42 UT, the C3 occulting disk appears indeed 
			surrounded and from there on the event looks as a whole 
			as a very asymmetric halo. The mean plane-of-sky speed
			of the LE of the event at PA ~ 90 deg was 1260 km/sec
			showing a decelerated profile - based on a second 
			order fit, we obtained speed > 1500/km/sec below 10
 			solar radii and around 1000 km/sec at ~21 solar radii - 
			(based on C3 data). GOES observed a C6.3 X-ray event
			on S08E90 between 06:33 - 07:58 UT with peak emission
			at 07:14 UT. EIT 195 images show signatures of a CME
 			above the E limb (barely backsided) starting at 
			05:48 UT. A strong wave signature can be seen
 			propagating toward the front side by 06:48 UT,
 			developing afterward all across the eastern hemisphere.
			Nice post-flare loops on E start to be seen by around
 			08:00 UT. The event has therefore been determined as 
			a strong limb event barely backsided that produced 
			at least an asymmetric halo signature, frontsided.
 			Hence, the flank of the event is maybe likely to travel 
			toward earth.

2007/01/26 (Friday)

	  E limb	Much gusty outflow continues, following event reported
			to start at 06:54 UT on previous day.

02:54 UT  EN East	Ragged front develops as an apparently twisted
			('circular') structure.

10:30 UT  EN East	Ragged front with faint extensions to S.

Last C2 image available by the time of writing:  11:06 UT.