LASCO Activity Report for
April 11, 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

2006/04/10 (Monday)

06:06 UT  S East	LASCO observed a very faint Partial Halo Event. It is
 			difficult to establish the time of first appearance 
			due to its faintness and the so diffuse aspect of the
 			features involved. Briefly, by around 06:06 UT a very
			diffuse and faint loop front followed by a faint and
 			expanding feature that extend later all above the S 
			Pole up to the W limb starts to be seen on SE. The
			expanding feature is apparently first seen in C3 above
 			the W Limb at ~ 11:18 UT. It is difficult to track it
 			accurately in C2 because it mixes up with the trail of 
			a previous limb event on W, already under development
 			(bright ragged front first seen in C2 on 04/09 at 
			22:30 UT -in C3 on 04/10 at 00:18 UT- on the W Limb, 
			with diffuse extensions to N and S). Note also that 
			early on 04/10 the slow development of a system of 
			faint loops can be discerned in C2 on NW (first seen 
			in C3 at 07:42 UT) from which it is difficult to
	 		establish its association, if any, to the bright loop
 			front reported to start at 22:30 UT. 
			The mean plane-of-sky speed of the LE of our event at 
			PA 151 was ~ 200 km/sec (based on C3 data). The event
 			apparently spans in the C3 FOV at 17:42 UT ~ 165 deg,
 			from PA 110 - 275. No frontsided signatures prior to 
			the event on EIT 195 images, nor X-ray events were
			reported by the time. The event has therefore been
			determined as a very faint Partial Halo, most probably
			backsided.

2006/04/11 (Tuesday)

	  W Limb	Some gusty outflow.

09:54 UT  WS West	Diffuse and faint brightening just appearing develops 
			as a not-well-defined front.

Last C2 image available by the time of writing: 11:30 UT.