Sketches of a magnetic field geometry for three models: (a) Azimuthal magnetic field, (b) radial magnetic field, and (c) dipole magnetic field.
Phase velocities of the Alfvén (curves 1, 2, and 3) and slow magnetosonic (curves 4, 5, and 6) waves corresponding to parameters (1, 0.5, 0.1), respectively.
Transverse displacement and perturbations of the magnetic field and velocity corresponding to the Alfvén pulse in the azimuthal tube.
Longitudinal displacement and field-aligned perturbations of the magnetic field and velocity induced by the Alfvén pulse in the azimuthal magnetic tube.
Propagation of the wave front along the radially converging magnetic field towards the center of the field.
Propagation of the wave front along the dipole magnetic tube towards the dipole.
Average velocity perturbations in the tube as functions of time in the cases of uniform, radial, and dipole magnetic flux tubes.
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