CME 19990921

Tutorials: UVCS CME Observations pdf / html
UVCS CME Catalog Pages html

Table 1 - General Information

CME ID
 Time (UT)
 PA (deg)
 Speed (km/sec)
 Acceleration (m/sec2)
 Mass (g)
 Type II RB
X Flare
19990921.033005.p299g
 03:30
 298
 1402
 0.7
4.6e+15*
 Yes
 Yes


Table 2 - UVCS Observation Sequence

FITS filename
 PA (deg)
 T i (UT)
 Tf (UT)
 Height (Rsun)
 Slit W. (arcsec)
 Exp. Time (sec)
d99.09.21.03:08:04.ovi.dat
 315
 03:08:34
 03:15:14
 1.50
 27
 200


03:15:58
 03:22:38
 1.60
 27
 200

315
 03:23:26
 03:32:26
 1.70
 27
 180


03:34:33
 03:43:33
 1.90
 27
 180

315
 03:45:32
 03:57:32
 2.10
 27
 180


03:59:45
 04:14:45
 2.50
 27
 180

315
 04:17:48
 04:39:48
 3.00
 27
 200

UVCS Slit Position

MOVIE of UVCS Slit on LASCO Images

Table 3 - UVCS Observation Wavelength Range

FITS filename
 Wave Min (A)
 Wave Max (A)
d99.09.21.03:08:04.ovi.dat
 1023.10
 1043.40

997.500
 1000.30

971.800
 985.700

1208.50
 1221.30


Table 4 - UV Properties

First Obs. Max blue-shift (km/sec) Max red-shift (km/sec) Detected at (Rsun) Lines
1999/09/21 03:19 1126 0 1.41,1.53,1.65,1.88,2.11,2.56,3.10 HILya1216
HILyb1026
HILyg973
CIII977
OVI1032
OVI1038
OV1214
OV1218

Images

Intensity Images

OVI 1032 Intensity shows various structure passing the slit


Plots and more

Possible front/shock passing as seen in the diffused OVI line profile

Large blue shift seen in OVI. It may be part of the CME front that propagated toward the Earth (so seen later in the plane of the sky).


Interpretation

Front ?
Void No
Shock ?
Current Sheet No
Prominence Yes
Flare O VI No
Leg No
Helix No

Last Update Thu May 10 14:47:39 2012