Magnetic field strengths 12 Magnetic fields 12 Sun: magnetic fields 8 Absorption 4 Arbitrary cross section 4 Aspect ratio 4 Astrophysics 4 Boundary layer flow 4 Boundary shapes 4 Coronal loops 4 Coronal mass ejection 4 Coupled systems 4 Critical values 4 Cylindrical models 4 Cylindrical symmetry 4 Dynamical evolution 4 Eigen-frequencies 4 Eigen-modes 4 Energy efficiency 4 Energy equation 4 Energy principles 4 Equation of motion 4 Equations of motion 4 Equilibrium parameters 4 Field strengths 4 Flux ropes 4 Global quantities 4 Helicities 4 Helicity 4 Hermitian operators 4