Fig. 14

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Brγ spectral line profiles produced by the radiative transfer models at different inclinations of the magnetosphere. As we move to higher inclinations, the peak line-to-continuum flux ratio decreases and the line broadens. The inverse P Cygni profile with a redshifted absorption feature disappears beyond inclinations of 54°, as the accretion columns cover less of the stellar surface and the shock region. The blue- and redshifted velocity components of the rotating magnetosphere are increasingly separated, leading to a double peaked profile at high inclinations. We note that the synthetic data were convolved with a Gaussian and brought to the spectral resolution of GRAVITY.
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