Large-Scale Internal Magnetic Field of the Sun

Theory of fossil magnetic field

“…The estimations for sample of main sequence stars show that the strength of dynamo supported fossil magnetic field inside the young stars may have the values ≈ (0.1 − 10) · 10 6 Gs. Such a strength of toroidal magnetic field is quite enough for the formation of magnetic ropes and their rising to the surface for Alfven time (Dudorov, Krivodubskii, Ruzmaikina & Ruzmaikin, 1989).…”

Generation of Strong Toroidal Magnetic Field Near the Bottom of the Solar Convective Zone

“…= B^il? the magnitude of which is limited by ohmic dissipation and magnetic buoyancy (Dudorov et al 1989;Krivodubskij 1990) dB t ytot = r sin G (B^Stf*)! + V^m A B t + rot(V b xB t ).…”

The Toroidal Magnetic Field inside the Sun

“…Recently have showed that there is a sharp radial gradient in the Sun's rotation at the base of the convection zone, near the boundary with the radiative interior. It seems to us that the sharp radial gradients of the angular velocity near the core of the Sun and at the base of the convection zone, acting on the relict poloidal magnetic field B r , must excite an intense toroidal field B^, that can compensate for the loss of the magnetic field due to magnetic buoyancy.Magnetic buoyancy plays the main role in constraining the amplitude of the magnetic induction of the toroidal field generated at the present stage of solar evolution (Dudorov et al, 1989;Krivodubskij, 1990). There, from the condition of stationarity, dB^/dt -0, neglecting ohmic dissipation, we obtained the following expression for the maximum value of the established stationary toroidal field (Dudorov et a/., 1989;Krivodubskij, 1990):…”

“…Magnetic buoyancy plays the main role in constraining the amplitude of the magnetic induction of the toroidal field generated at the present stage of solar evolution (Dudorov et al, 1989;Krivodubskij, 1990). There, from the condition of stationarity, dB^/dt -0, neglecting ohmic dissipation, we obtained the following expression for the maximum value of the established stationary toroidal field (Dudorov et a/., 1989;Krivodubskij, 1990):…”

“…There, from the condition of stationarity, dB^/dt -0, neglecting ohmic dissipation, we obtained the following expression for the maximum value of the established stationary toroidal field (Dudorov et a/., 1989;Krivodubskij, 1990):…”