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    • Petrucci, P. O.; Waisberg, I.; Le Bouquin, J. B.; Kervella, P. (EDP Sciences, 2017)
      We present the first optical observation of the microquasar SS 433 at sub-milliarcsecond (mas) scale obtained with the GRAVITY instrument on the Very Large Telescope interferometer (VLTI). The 3.5-h exposure reveals a rich ...