Fig. 6.
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Simulated data, generated in the boson star 2 metric and represented by dots with error bars (reflecting GRAVITY-like uncertainties), compared with two best-fit models: one model in the boson star 2 metric (solid line), and the other in the Kerr metric (dashed lines). Left: astrometry. Right: time evolution of Q/I in red and U/I in blue.
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