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Outflows, spanning a wide range of dynamical properties and spatialextensions, have now been associated with a variety of accreting astrophysicalobjects, from supermassive black holes at the core of active galaxies to youngstellar objects. The role of such outflows is key to the evolution of thesystem that generates them, for they extract a fraction of the orbitingmaterial and angular momentum from the region close to the central object andrelease them in the surroundings. The details of the launching mechanism andtheir impact on the environment are fundamental to understand the evolution ofindividual sources and the similarities between different types ofoutflow-launching systems. We solve semi-analytically the non-relativistic,ideal, magnetohydrodynamics (MHD) equations describing outflows launched from arotating disk threaded with magnetic fields using our new numerical scheme. Wepresent here a parameter study of a large sample of new solutions. We study thedifferent combinations of forces that lead to a successfully launched jet anddiscuss their global properties. We show how these solutions can be applied tothe outflow of the water fountain W43A for which we have observationalconstraints on magnetic field, density and velocity of the flow at the locationof two symmetrical water maser emitting regions.

A study of radial self-similar non-relativistic MHD outflow models: parameter space exploration and application to the water fountain W43A