Solar atmospheric jet propagation in a vortex field

Abstract

On the assumption of the existence of a vortex layer in the solar atmosphere, the interaction of chromospheric jets with individual vortices is studied. Although all the models assume a penetration of the jet into a quiet atmosphere, however, perturbations caused by the rise and fall of a multitude of jets cannot fail to cause vortex ows in a di erentially rotating solar atmosphere, as occurs in the case of hurricanes and tornadoes on the Earth. When interacting with a jet, the vortex can create thrust applied to the jet and directed upwards. The thrust complements the action of the initial pulse on the jet and the same elevation height can be achieved with lower initial velocities. Due to the action of the vortex, the jet rises both higher and during a longer time than, for example, in the case of a ballistic mechanism only. A jet, when it penetrates the vortex, can expand due to the centrifugal acceleration caused by this vortex. Both e ects can modify the movement of the jets and, therefore, can contribute to the ne structure of the solar wind.