Comparison of the ambient medium temperature profile of Sgr A* and the observed Brγ luminosity of G2/DSO. The red line represents the fit of the Brγ luminosity of G2/DSO displayed in Fig. 11, whereas the black dashed line represents the expected temperature imprint of Sgr A* (Eq. (14)). In 2014, the distance of G2/DSO to Sgr A* is about 1855 Schwarzschild radii. We strongly emphasize the irrelevance of the temperature magnitude (10⁸ K of the ambient medium against 10⁴ K of the Case B recombination), due to the missing transformation factor: the important quantity is the increasing and decreasing profile that should be imprinted in the luminosity of G2/DSO.