Fig. 1
NIR Ks-band (2.2 μm) light curves of Sgr A* observed in polarimetry mode on 27 May 2011 (top) and 17 May 2012 (bottom) produced by combining pairs of orthogonal polarization channels; left: 0°, 90° and right: 45°, 135°. The blue dots show Sgr A* flux density measured in mJy, while the red connected dots show the background flux densities.
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