  The minimal geometric deformation (MGD) paradigm is here employed to survey
axion stars on fluid branes. The finite value of the brane tension provides
beyond-general relativity corrections to the density, compactness, radius, and
asymptotic limit of the gravitational mass function of axion stars, in a MGD
background. The brane tension also enhances the effective range and magnitude
of the axion field coupled to gravity. MGD axion stars are compatible to
mini-massive compact halo objects for almost all the observational range of
brane tension, however, a narrow range allows MGD axion star densities large
enough to produce stimulated decays of the axion to photons, with no analogy in
the general-relativistic (GR) limit. Besides, the gravitational mass and the
density of MGD axion stars are shown to be up to four orders of magnitude
larger than the GR axion stars, being also less sensitive to tidal disruption
events under collision with neutron stars, for lower values of the fluid brane
tension.
