LASCO Activity Report for
January 22, 2004 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







2004/01/21


00:54 UT  E Limb	Spray-like front.

03:06 UT  E Limb	Jet-like front slightly to S.

04:54 UT  HALO		Bright loop front with cavity and core developing 
			toward SE. By 06:30 UT the loop spans ~ 175 deg from 
			PA 45 - 215. By 06:54 UT very faint extensions arounding
			the rest of the C2 occultor are discernible. Part of a
			big filament on the SE quadrant in EIT images is seen 
			to erupt starting at 03:36 UT. Therefore, the event has 
			been determined as a 'full' halo CME, frontsided. Gusty
			outflow follows at SE.

12:30 UT  S East	Bright loop front with strong cavity and core. Twisted
			trailing material. EIT shows the eruption of the rest 
			of the filament in the SE quadrant starting at ~11:00 UT.
			At PA 136 the mean plane-of-sky speed of the LE averaged
			730 km/s based on C3 data.

14:30 UT  N East	Narrow ragged loop front. Gusty outflow follows.

15:06 UT  E Limb	Extremely faint ragged loop front, spanning roughly 
			from the PA of previous event to that of the next event.
			It fades throughout C3.

15:30 UT  E Limb	Spray-like front slightly to N of the northern leg of
			event at 12:30 UT. It fades throughout C3.

15:54 UT  S Pole	Faint ragged loop front developing slightly to SE. It
			fades throughout C3.

21:08 UT  S East	Ragged loop front with slight cavity preceded by 
			several a small jets. In particular, one slightly to N 
			at 20:30 UT. Gusty outflow follows well into next day.

21:54 UT  N West	Bright loop front with strong cavity and twisted core.
 			Twisted trailing material. EIT shows the eruption of a 
			big prominence on the NW slowly starting at ~ 21:12 UT.
			At PA 291 the mean plane-of-sky speed of the LE averaged
			789 km/s based on C3 data. Gusty outflow follows.





2004/01/22


00:54 UT  S East	Small feature falling down. Similar one going outwards.
			Separation point at ~ 2.75 solar radii (PA ~163).

02:54 UT  W Limb	Spray-like front developing slightly to SW.









Web curator: 
K.M.Schenk

NASA Goddard Space Flight Center

Solar Physics Branch / Code 682

Greenbelt, MD 20771