20021231.183923

December 31, 2002

20021231.183923_mk4

Center =147.53+/-1.57 degrees PA (SE quadrant) (red radial line)	Maximum height = 1.55+/-0.07 Rsun
Width (at 1.20 Rsun) = 36.87+/-1.24 degrees latitude (measured between edges -- vertical dashed lines at inflection points)	Width (at 1.38 Rsun) = 24.30+/-1.91 degrees latitude
Cavity depletion, equatorward (1.20 Rsun) = 0.38+/-0.013 (ratio of red to blue dashed line)	Cavity depletion, equatorward (at 1.38 Rsun) = 0.21+/-0.016 (ratio of red to blue dashed line)
Cavity depletion, poleward (1.20 Rsun) = 0.10+/-0.018 (ratio of green to blue dashed line) Minimum intensity in cavity (1.20 Rsun) = 2.9e-07+/-2.9e-09 (Bsun) (blue dashed lines); Position of minimum intensity = 148.13+/-0.42 (blue star)	Cavity depletion, poleward (1.38 Rsun) = 0.06+/-0.024 (ratio of green to blue dashed line) Minimum intensity in cavity (1.38 Rsun) = 1.6e-07+/-1.6e-09 (Bsun) (blue dashed lines); Position of minimum intensity = 152.84+/-0.09 (blue star)
Slope at equatorward cavity edge (1.20 Rsun) = -2.0e-08+/-5.8e-09 (Bsun/degree)	Slope at equatorward cavity edge (1.38 Rsun) = -7.2e-09+/-3.1e-09 (Bsun/degree)
Slope at poleward cavity edge (1.20 Rsun) = 3.7e-09+/-5.8e-09 (Bsun/degree)	Slope at poleward cavity edge (1.38 Rsun) = -1.8e-10+/-3.1e-09 (Bsun/degree)

length lower limit = 1 days visible in white light at limb December 31*** (EIT FIL erupt (1/1)!);
Also visible Jan-March 2003
Evolution comments = Also visible Dec 30, a little Dec 29, in Mk4. Small filament piece visible in Halpha -- part of larger PCF-S system Jan-March 2003.... May erupt in CME this day (after MLSO stops observing) -- but EIT doesnt show any on-disk activity to corroborate.

Neutral line orientation at the limb =
CME/dimmings association = CME December 31 -- although note since MLSO stops observing about an hour before the event, cant be sure -- in fact, filament in 304 is still there jan 1, so probably this one is not associated - EIT fil erupt on 1/1/03 is more plausible.;
Active region association = N/A
Filament/FC association = high prominence; PCF-S
Other comments: N/A
Filament - only visible in H-alpha or EUV
Necking - bulging neck

Cavity list (e.g. Tables 2 + 3)
Full list of cavity days observed
List of best cavity days (SET 1) observed (e.g. Table 1)
CMEs associated with cavities (e.g. Tables 7 + 8)
BACK TO TOP