Open Access
Fig. 5.
Three-color composite image for the central 100 mas region around Sgr A* for the night 2018-Jun.-23. Sgr A* (located at the center of the image) and S2 are color-coded in green, our tentative detection is shown in red (marked with a white circle), and the residual map is shown in blue. North is up and east to the left.
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