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Active magnetic experiment: a magnetic bubble in the ionospheric stream

A space plasma experiment is discussed which consists of a magnetized plasma bubble interacting with the ambient (ionospheric) plasma. The magnetized plasma inside the magnetized bubble is either tied to the dipole magnetic field generated inside the satellite or is inflated by a particle outflow from the satellite. The parameters of the bubble are discussed in relation to the parameters of the ambient plasma and the plasma regimes and phenomena that can be investigated are indicated.