July 13, 2002



20020713.171514_mk4

length lower limit = 9 days visible in white light at limb July 8; -9; -10; -11; -12; -13; -14; -15; -16;

Recurrence =East limb May 16; -18; West limb May 27; -28; -29; -31; East limb June 12; -13; West limb June 25; -26; -27; East limb July 8; -9; -10; -11; -12; -13; -14; -15; -16; West limb July 20; -21**; -22*** (LASCO/EIT CME (23)!); Visible on both limbs July 8-10, possibly also July 21-22
Evolution comments = BIG PCF system. Kinked NL straightens over a two and a half months. At least one eruption, June 6, when it is mostly still behind the limb. Appears larger (wider, higher) and darker at the limb before erupting in CME on July 23. Unfortunately, MLSO stops observing before this CME.

Neutral line orientation at the limb = 57.63 +/- 17.10 degrees from line-of-sight projected onto solar disk; 57.63 +/- 6.71 degrees from N-S
CME/dimmings association = CME July 23; prominence eruption on July 23;
Active region association = N/A

Filament/FC association = PCF-N; channel extending across disk, nearly parallel the whole way
Other comments: cavity visible in EUV
Filament - only visible in H-alpha or EUV

Necking - no neck