Abstract:We report results from the first Earth-space VLBI observations of the Galactic Center supermassive black hole, Sgr A * . These observations used the space telescope Spektr-R of the RadioAstron project together with a global network of 20 ground telescopes, observing at a wavelength of 1.35 cm. Spektr-R provided baselines up to 3.9 times the diameter of the Earth, corresponding to an angular resolution of approximately 55 πas and a spatial resolution of 5.5π Sch at the source, where π Sch β‘ 2πΊ π/π 2 is th… Show more
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