Fig. 1.
Measured outflow radial velocity, vR, against the lower limit to the escape velocity calculated from the estimated upper limit of the launching radius (see Tables 3 and 5 in Kosec et al. 2020 for the data on Her X–1, and Tables 11 and 12 in Miller et al. 2015 for the data on GRO J1655−40, 4U 1630−47, H 1743−322, and GRS 1915+105). The error bars (not plotted) are substantial. The red dashed line describes vR = vesc. In all but one case the measured radial velocities are below (the lower limit to) the escape velocity.
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