Bibcode
Moreno-Insertis, F.
Referencia bibliográfica
Astronomy and Astrophysics (ISSN 0004-6361), vol. 122, no. 1-2, June 1983, p. 241-250.
Fecha de publicación:
6
1983
Número de citas
106
Número de citas referidas
90
Descripción
Solutions of the equations describing the motion of a straight
horizontal magnetic flux tube in the convection zone of the sun
including inertial term and radiative exchange with the surroundings are
presented. Cases where the tube is initially both in thermal or in
mechanical equilibrium with the surroundings are considered. It is shown
that the superadiabatic stratification of the convection zone affects
greatly the time scale for the rise of tubes with weak field strength
(less than the equipartition value), reducing it by a large factor
compared with tubes in permanent thermal equilibrium with the
surroundings. The various possible regimes for the rise starting from a
state of initial mechanical equilibrium are discussed. It is shown that
all tubes with magnetic fluxes approximately equal to or greater than 10
to the 20th Mx will cross the convection zone in time scales of less
than two years.