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We present detailed modeling of periodic flaring events in the 6.7 GHz and12.2 GHz methanol lines as well as the OH 1665 MHz and 1667 MHz transitionsobserved in the G9.62+0.20E star-forming region. Our analysis is performedwithin the framework of the one-dimensional Maxwell-Bloch equations, whichintrinsically cover the complementary quasi-steady state maser and transientsuperradiance regimes. We find that the variations in flaring time-scalesmeasured for the different species/transitions, and sometimes even for a singlespectral line, are manifestations of and are best modeled with Dicke'ssuperradiance, which naturally accounts for a modulation in the duration offlares through corresponding changes in the inversion pump. In particular, itcan explain the peculiar behaviour observed for some features, such as thepreviously published result for the OH 1667 MHz transition at$v_\mathrm{lsr}=+1.7$ km s$^{-1}$ as well as the methanol 6.7 GHz line at$v_\mathrm{lsr}=-1.8$ km s$^{-1}$, through a partial quenching of thepopulation inversion during flaring events.

Modelling of the multi-transition periodic flaring in G9.62+0.20E