A possible model for global oscillations of the Sun according to Hill's observational data

A sequence of periods in a spectrum, obtained from solar diameter measurements, agrees to a high degree of probability with eigenfrequencies of a spherically symmetric layer located at the base of the convection zone. The parameters of the layer are thickness: 104 km, depth of occurrence: 0.56 Rsub(THETA), density: 2.5x10-1 g cm-3, temperature: 2.5 105 K, and field strength: 4.3x107 G. The field is composed of individual ropes with a preferred orientation in coordinate psi. The condition for resonance excitation on eigenfrequencies of the system is satisfied for oscillations in the layer in coordinate THETA, owing to small damping. A response to these oscillations is suggested by strength fluctuations of the poloidal component of the general magnetic field of the Sun as well as by some small plasma density variation at the photospheric level. (author)