LASCO Activity Report for
April 28, 2008 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

2008/04/25 (Friday)

04:30 UT  W Limb	Elongated loop-like front.

11:30 UT  S West	Elongated and diffuse loop frotn that fades
			throughout C2.
			
14:54 UT  WN West	Spray-like front, top of a narrow loop front.
	
22:30 UT  NN West	Extremely faint and slow expanding front, 
			in fact, barely discernible. It is also
			barely seen in C3, and only close to the inner
			edge of its FOV.
			 

2008/04/26 (Saturday)

04:30 UT  W Limb	Bright fan-like front. It fades throughout C3.

06:30 UT  S West	Very faint loop front (apparently from 'pair 
			formation'). It is followed at 09:00 UT by
			a ragged front.
			
14:30 UT  EN East	Diffuse brightening develops as an expanding 
			ragged loop front immediately followd by another
			bright ragged front. The event develops as, at 
			least, a partial Halo event, practically 
			covering the whole northern hemisphere. A faint
			loop expanding front can be seen by the time developing 
			toward SE. The event is first seen in C3 above the 
			NE Limb at 15:42 UT exhibiting a double front LE. 
			The plane-of-sky speed of the outermost front at PA
			42 is ~375 km/sec, while for the second front is
			~ 475 km/sec at PA 75 (determination based on C3
			data, both cases). The HT profiles show practically 
			no acceleraton. The outermost front fades before
			reaching the end of the C3 FOV. EIT 195 images
			show the ejection of a small piece of faint material
			toward W starting at ~ 12:36 UT from nearby an AR 
			located around N08E09, followed by a tiny gradual 
			expansion of loops. By 14:00 UT, a dimming region 
			develops toward E jointly with a rather circular wave 
			with epicenter on the AR. Post-flare loops after
			14:00 UT. GOES observed a B3.8 X-ray flare on N08E09 
			between 13:54 - 14:38 UT with peak emission at 
			14:08 UT.
			

2008/04/27 (Sunday)

13:31 UT  E Limb	Slow developing of a system of faint loop 
			fronts. It continues well into next day.
			

2008/04/28 (Monday)

01:54 UT  WN West	Spray-like front.

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