LASCO Activity Report for
January 20, 2004 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

2004/01/16

01:54 UT  W Limb	Fairly symmetric faint loop front preceded by a jet
			at 00:54 UT. It fades close to the inner edge of C2 fov.

04:30 UT  N East	Ragged front of a big twisted structure.

05:06 UT  W Limb	Bright loop front with cavity and trailing material
			that turns elongated in C3 fov with a ragged LE. 
			At 10:54 UT 'boomerang-shaped' infalling feature.
			Similar feature traveling outward. Separation point
			at ~ 3.5 solar radii (PA ~257).

17:06 UT  S West	Slow rising faint loops' system developing well into 
			next day.

2004/01/17

05:06 UT  S West	Slow loop front.

09:06 UT  W Limb	Small ragged front followed by loop front at 10:34 UT.

16:54 UT  S Pole	Asymmetric loop front followed by a ragged front at
			18:30 UT at PA coincident with SE loop's leg. Gusty
			outflow follows at SE well into next day.

20:06 UT  S East	Faint spray-like front slightly N of previous event.

2004/01/18

01:31 UT  S East	Jet-like front followed by a similar one at 01:54 UT
			residual to event at 16:54 UT on previous day.

01:31 UT  W Limb	Narrow spray-like front barely visible in C3. 

03:54 UT  E Limb	Ragged loop front brightest to S. It fades in C3, 
			close to the inner edge.

10:34 UT  W Limb	Narrow twisted feature.

11:54 UT  S West	Ragged loop front brightest to S with cavity. Gusty 
			outflow follows; two small fronts at 13:54 UT and 
			14:30 UT at W limb.

19:31 UT  W Limb	Fast bright ragged loop front with cavity, and core 
			at PA coincident with that of the northern leg of the
			loop.

2004/01/19

01:54 UT  E Limb	Small jet followed by ragged asymmetric loop front
			slightly to N. Slow rising loop system to N.

15:06 UT  W Limb	'Blob-like' feature starts development at ~ 4 solar
			radii.

19:31 UT  W Limb	Faint ragged front. It vanishes close to the inner
			edge of C2 fov.

2004/01/20

00:06 UT  HALO		Big loop front travelling S with cavity and core 
			develops into a full halo CME. Gusty outflow follows
			to S. C8.2 X-ray flare on NOAA AR 10540 starting at 
			19:54 UT. EIT shows filament eruption starting at 
			22:24 UT. The event has therefore been determined
			frontsided.

03:54 UT  N East 	Infalling material starting at ~3.70 solar radii with
			similar feature travelling outward, followed by
			infalling narrow 'helmet-like' front at 06:54 UT. 
			Several 'boomerang-type' features travelling outward
			follow to N. Separation occurs at ~ 4.3 solar radii.

08:30 UT  S Pole	Ragged loop front...

	10:45 - 18:05 UT	Temporary DSN Data Gap