LASCO Activity Report for
May 03, 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

SOHO Telemetry Submode changed to Submode 5 on 2004/04/13 at 16:00 UT 
(SUMER began observing on 2004/04/14). SUMER campaign runs until 2004/06/17.
In other words, LASCO synoptic observation plan cadence remains the same
but the EIT CME watch images will be reduced to half-resolution (512x512)
during that period.

2004/04/30 (Friday)

04:26 UT  N West	Bright ragged front. EIT Fe XII running difference
			images show CME coming out from just behind the NW
			limb starting at around 02:36 UT.

07:27 UT  W Limb	Front to S of previous event preceded by a faint and
			diffuse front to S at 06:26 UT that quickly fades. The
			front fades throughout C2. It could be related to C 1.9
			X-ray flare occurred on S14W42 between 05:35 - 05:55 UT
			with peak emission at  05:47 UT. EIT show signatures 
			of the event (wave and dimming toward W and N) starting
			at ~05:36 - 05:48 UT. 
	
18:26 UT  N East	Very Faint ragged front. It fades throughout C2.

2004/05/01 (Saturday)

03:50 UT  W Limb	Fairly faint ragged front followed by a similar front 
			at 06:50 UT, both developing slightly toward SW.

10:06 UT  WS West	Narrow and fairly faint ragged front slightly to S of
			previous event followed a 14:26 UT by a much brighter
			one.

16:50 UT  W Limb	Following event at 10:06 UT, ragged loop front and
			trailing material. Faint extensions (first seen at 
			17:06 UT) above SW limb up to S Pole that fade in C2.
			At ~ 19:50 UT a bright and elongated loop front with
			twisted trailing material develops to S of the ragged
			front.

20:26 UT  N West 	Vey narrow ragged loop front along starts developing
			at ~ 4 solar radii. Difficult to give an exact time of
			first appearance. Some infalling material. Some gusty
			outflow follows.

23:06 UT  S East	Ragged and diffuse loop front.

2004/05/02 (Sunday)

	00:26 - 03:50 UT	Temporary Data Gap.

04:26 UT  S West	Loop front. Development missed because of data gap.

	05:26 - 13:50 UT	Temporary Data Gap.

19:27 UT  W Limb	Bright and asymmetric loop front.

20:50 UT  N East	Faint narrow and elongated ragged loop front.
	

2004/05/03 (Monday)

00:26 UT  S East	Initially bright loop front develops as a 'bubble-like'
			CME. Some gusty outflow follows. EIT Fe XII shows
			the development of a backsided event above the SE limb
			starting at ~ 23:12 UT.

02:06 UT  S West 	Wide and asymmetric loop front develops toward SW in 
			the trail of event reported to start at 19:27 UT on
			previous day. It is difficult to determine the exact 
			time of first appearance. At 03:06 UT, on the S Pole 
			(at the apparent position of the southern leg of the
			asymmetric loop), an elongated loop front develops
			slightly toward SE. The resulting complex event has the
			appearance of a partial halo CME in C3 FOV.
	
04:50 UT  N East	Ragged front superposed with a loop front in the LOS.
			The ragged front develops faster than the loop,
			resulting in a complex feature with structured inner
			part (C2). At ~08:50 UT another ragged loop front
			develops above the E limb.