Observational implication for a possible presence of a magnetic monopole-like field in the visible layers of sunspots is examined by constructing a magnetostatic model of sunspots with a monopole-like field configuration. The resulting monopole approximation for a magnetic structure of spots is found to be compatible with the observations within a certain limited range of optical depth, which happens to lie mostly in its visible range.

Abstract
1. Introduction
2. Equations
3. Results and Discussions
References

• Hong Sik Yun(Department of Earth Science College of Education, Seoul National University)