INTRODUCTION
There are two kinds of MMFs: unipolar and
mixed polarity, i.e. bipolar (Harvey and Harvey 1973; Zhang et al.
1992).
©BBSO/NJIT Seminar on OCT 99, 2000
Moving Magnetic Features (MMFs) are regarded as small magnetic elements which
are carried away from the sunspot to the periphery by plasma flows
(Vrabec 1971; Harvey and Harvey 1973; Muller and Mena 1987; Brickhouse
and LaBonte 1988; Lee 1992).