Rotating Excited Boson Stars

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Written by Lucas Gardai Collodel

We investigate axially symmetric, rotating boson stars which are radially excited. These objects exist only for a limited range of the field's frequency. Given different coupling strengths with gravity we determine its domain of existence, as well as the frequency dependence behaviour of the star's parameters, which is then compared with the non-excited case. The circular orbit's tangential velocity of test particles around such objects is also analysed in order to determine if their existence offers a good alternative for dark matter at the galactic scale.