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Abstract
Two different interpretations of the quiescent radio emission of UX Ari are considered and compared with available observations. It is assumed that the radiation mechanism is gyrosynchrotron and that the emitting electrons are distributed according to (1) a Maxwellian distribution at the same temperature deduced from X-ray observations (T≃5×10 7 K); and (2) a power-law distribution with different exponents. Both electron populations can reproduce the observed spectrum, provided that a suitable configuration of the magnetic field is assumed. The time evolution of a population of electrons following an initial power-law distribution is also studied
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