LASCO Activity Report for
December 9, 2005 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

KEYHOLE Operations:
   Dec 3 - Dec 20 (26 m)
   Dec 6 - Dec 17 (34 m)

EIT CCD bakeout (+ pre and post cal) between 
Dec 2 ~ 18:12 UT - Dec 18 21:00 UT. 


2005/12/05 (Monday)

13:48 UT  E Limb	Ragged loop front. Very faint in C3. By 14:12 UT, an
			extremely faint and diffuse front starts to be seen 
			on SE. Difficult to say whether it is associated to
			the ragged loop front.

17:48 UT  E Limb	Another ragged loop front. Also faint in C3, fading
			throughout its FOV.

21:36 UT  E Limb	Bright ragged loop front with apparently twisted 
			trailing material. It fades throughout C3.

2005/12/06 (Tuesday)

02:12 UT  E Limb	Apparently circular structure in the trailing material
			of event reported to start at 21:36 UT on previous day.

21.12 UT  N West	Extremely faint loop front starts to be discernible
			above the NW limb.

23:24 UT  E Limb	Ragged front that fades throughout C3.

2005/12/07 (Wednesday)

05:12 UT  S West	Kind of reconection event ("pair formation") well above
			the limb: very faint blob-like front and corresponding
			infalling material. Difficult to give an exact time of
			first appearance.

15:36 UT  S West	Another "pair formation" event.

19:12 UT  N East	Wide and expanding loop front with faint extensions
			that extend all above the N Pole up to the W Limb by
			19:24 UT. The C2 occulting disk seems to be fully 
			covered by the extension by 19:48 UT. The event is first
			seen in C3 above the ENE Limb at 20:18 UT with very 
			faint extensions above the N Pole up to the W Limb. By
			21:42 UT, the faint extensions make the event appear
			as a very faint full halo. The bulk of the ejection
			moves mainly toward ENE. The halo signature fades at the 
			very beginning of next day. GOES reported a B5.5 X-ray
			flare on NOAA AR 10830 (N15E14) between 18:41 - 19:10 UT
			with peak emission at 18:52 UT.

2005/12/08 (Thursday)

No significant activity.

2005/12/09 (Friday)

See Report on Dec 12, 2005.


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