Constraints to neutron-star kicks in high-mass X-ray binaries with Gaia EDR3

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Fig. 2.

Inferred peculiar velocities vs companion masses in the selected HMXBs. The uncertainty in mass come either from the literature (see Table 1) or from the 20% systematic described in Sect. 4; the uncertainty in peculiar velocity is the 68% confidence interval from the posteriors inferred in Sect. 3.

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