THE HARVEY AND HARVEY MODEL (1973)


The model by Harvey and Harvey (1973) suggests that magnetic flux is removed from the sunspot at the photospheric level. This produces pairs of MMFs in which magnetic elements of opposite polarity to the sunspot tend to be formed farther out. Mayer (1974) and Ryutova et al. (1998) showed some evidence that the inner footpoint of the MMF bipoles shares the sunspot's polarity, which supports the model of Harvey and Harvey (1973).


©BBSO/NJIT Seminar on OCT 99, 2000