Persistent Non-Gaussian Structure in the Image of Sagittarius A* at 86 GHz

  title={Persistent Non-Gaussian Structure in the Image of Sagittarius A* at 86 GHz},
  author={Sara Issaoun and M. D. Johnson and Lindy Blackburn and Avery E. Broderick and Paul Tiede and Maciek Wielgus and Sheperd S. Doeleman and Heino Falcke and Kazunori Akiyama and G. C. Bower and Christiaan D. Brinkerink and Andrew Chael and Ilje Cho and J. L. G'omez and Antonio Hern'andez-G'omez and David H. Hughes and Motoki Kino and Thomas P. Krichbaum and Elisabetta Liuzzo and Laurent Loinard and Sera B. Markoff and Daniel P. Marrone and Yosuke Mizuno and James M. Moran and Yurii Pidopryhora and Eduardo Ros and Kazi L. J. Rygl and Z.-Q. Shen and Jan Wagner},
  journal={The Astrophysical Journal},
Observations of the Galactic Center supermassive black hole Sagittarius A* (Sgr A*) with very long-baseline interferometry (VLBI) are affected by interstellar scattering along our line of sight. At long radio observing wavelengths (≲1 cm), the scattering heavily dominates image morphology. At 3.5 mm (86 GHz), the intrinsic source structure is no longer sub-dominant to scattering, and thus the intrinsic emission from Sgr A* is resolvable with the Global Millimeter VLBI Array (GMVA). Long… 
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