Constructing the Coronal Magnetic Field By Correlating Parameterized Magnetic Field Lines With Observed Coronal Plasma Structures

摘要: A method is presented for constructing the coronal magnetic field from photospheric magnetograms and observed loops. set of lines generated magnetogram data parameterized then deformed by varying values. The flux tubes associated with this are adjusted until correlation between loops maximized. mathematical formulation described which ensures that (i) normal component remains unchanged, (ii) given in entire corona over an active region, (iii) divergence-free, (iv) electric currents introduced into field. It demonstrated a parameterization potential field, comprising radial stretching can provide match simple bipolar AR 7999, crossed central meridian on 1996 November 26. result non-force-free Lorentz force being order 10−5.5 g cm s−2 resulting current density 0.079 μA m−2. Calculations show plasma beta becomes larger than unity at relatively low height ∼0.25 r⊙ supporting conclusion. presence such strong non-radial requires large transverse pressure gradients to maintain magnetostatic atmosphere, required persistent nature structures 7999. This scheme important tool generating solution consistent tube observations