Center
=179.72+/-2.37 degrees PA (SE quadrant) (red radial line) | Maximum height = 1.57+/-0.07 Rsun | |
Width (at 1.20 Rsun) =
19.97+/-3.35 degrees latitude (measured between edges -- vertical dashed lines at inflection points)
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Width (at 1.38 Rsun) =
13.43+/-1.39 degrees latitude
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Cavity depletion, equatorward (1.20 Rsun) =
0.14+/-0.023 (ratio of red to blue dashed line)
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Cavity depletion, poleward (1.20 Rsun) =
0.12+/-0.027 (ratio of green to blue dashed line)
Minimum intensity in cavity (1.20 Rsun) =
2.0e-07+/-3.4e-09 (Bsun) (blue dashed lines);
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Slope at equatorward cavity edge (1.20 Rsun) =
-6.6e-09+/-4.0e-09 (Bsun/degree)
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Slope at poleward cavity edge (1.20 Rsun) =
1.5e-09+/-4.0e-09 (Bsun/degree)
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length lower limit = 3 days
visible in white light at limb December 19; -20; -22*** (LASCO/EIT CME (23)!;
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No Recurrence analyzed | |
Evolution comments = Wide cavity over S pole from PCF-S parallel to limb. Also visible Dec 19. No Mk4 data Dec 18, nothing really Dec 17. Visible still Dec 22, no Mk4 data 21, nothing really 23 -- EIT shows erupting filament from the region early Dec 23, and there is a little puff in LASCO, not identified specifically as a CME, and H-alpha shows PCF has disappeared. Note also Dec 20 SW (near equator) cavity eruption (cavity small but visible Dec 19) |
Neutral line orientation at the limb = | |
CME/dimmings association =
CME December 23; prominence eruption on December 23; | |
Active region association =
N/A | |
Filament/FC association = PCF-S nearly parallel to limb; N/A | |
Other comments:
CME on West limb Dec 20 (just South of equator) arises from pre-cursor cavity | |
Filament -
only visible in H-alpha or EUV
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Necking -
straight up and down neck
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