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Fig. 5

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Flare model for Sgr A* from Falcke & Markoff (2000) is plotted in blue and compared to the data from July 20 (purple square for the NIR average flux during the flare time interval and purple arrow for the MIR upper limit; note that the MIR upper limit from the July 22 was lower). The red stars present the peak flux of the July 20 flare, together with the simultaneous sub-mm flux. Blue circles show the median fluxes in a non-flaring state. The radio-sub-mm SED is shown in black (with squares: the compilation of Genzel 2010, diamonds: from Shcherbakov 2011). The typical radio-sub-mm variability amplitudes and a compilation of MIR upper limits are shown in gray and taken from Melia & Falcke (2001). A flare due to a 30% increase in B in the jet model is also plotted as a red line. An increase in density resulting from a temporary increase in the accretion rate, , has the same result (Markoff et al. 2001).

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