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Observing the onset of the accretion wake in Vela X-1

Santangelo, A.; Grinberg, V.; Kretschmar, P. +7 more

High-mass X-ray binaries (HMXBs) offer a unique opportunity to investigate accretion onto compact objects and the wind structure in massive stars. A key source for such studies is the bright neutron star HMXB Vela X-1 whose convenient physical and orbital parameters facilitate analyses and in particular enable studies of the wind structure in HMXB…