Orbital motion near Sagittarius A*

  title={Orbital motion near Sagittarius A*},
  author={Maciek Wielgus and Monika A. Mościbrodzka and Jesse Vos and Zachary Gelles and Iv{\'a}n Mart{\'i}-Vidal and Joseph R. Farah and Nicola Marchili and Ciriaco Goddi and Hugo Messias},
  journal={Astronomy \& Astrophysics},
We report on the polarized light curves of the Galactic Center supermassive black hole Sagittarius A*, obtained at millimeter wavelength with the Atacama Large Millimeter/submillimeter Array (ALMA). The observations took place as a part of the Event Horizon Telescope campaign. We compare the observations taken during the low variability source state on 2017 Apr. 6 and 7 with those taken immediately after the X-ray flare on 2017 Apr. 11. For the latter case, we observe rotation of the electric… 

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