LASCO Activity Report for
April 7, 2008 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




2008/04/04 (Friday)

06:06 UT  SS West	Faint jet-like front.
		

2008/04/05 (Saturday)

02:26 UT  S Pole	Very diffuse narrow and elongated loop front.

06:50 UT  WS West	Elongated and narrow ragged loop front.

16:06 UT  W Limb	Brightening just appearing develops as a big, wide and 
			very bright loop front. Diffuse extensions surround 
			(ahead and on the sides) the bright main structure. They
			seem to cover the C2 occulting disk by 18:50 UT (LE on W
			well out of the C2 FOV by that time, signal on E barely
			discernible). Some small ragged fronts in the trailing 
			material along the day and into the next day. The event 
			was first seen in C3 on W at 16:42 UT. The width of the 
			main loop-like structure (not taken into account the 
			diffuse extensions nor material deflected) at 19:42 UT 
			was ~ 100 deg. If extensions and material deflected 
			included, the event expands ~ 180 deg, practically from 
			the N to the S Pole. The main plane-of-sky speed of the 
			LE of the main loop-ike structure was ~ 890 km/sec (based 
			on C3 data). The HT profile shows practically no acceleration.
			EIT 195 running difference images show a close-to-limb 
			back-sided event starting at 15:48 UT. No wave- or dimming-
			like signatures on the visible side of the disc. A filament 
			on the front side, close to the limb starts to lift-off by 
			19:48 UT developing toward WSW-SW.
			
21:26 UT  S West	Diffuse elongated brightening toward SW.

2008/04/06 (Sunday)

10:06 UT  S East	Faint and diffuse fan-like front.

2008/04/07 (Monday)

Last C2 image available by the time of writing: 05:26 UT


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