On the propagation of a video signal through the OH maser source associated with the infrared star NML Cygnus

The results of calculating the «response» of a space maser to a short video signal are presented. Approximate analytical estimates within the framework of the «Gaussian» approximation, suitable for an arbitrary space maser, are given. A numerical calculation was also carried out using experimental data available in the literature on the emission spectrum of a specific OH maser source associated with the infrared star NML Cygnus. The estimation of both the gain factor of the video signal by the given maser in terms of maximum instantaneous intensity and the gain factor of the video signal in terms of energy is obtained. It is shown that under certain conditions, both gain factors can be significant. Thus, the gain of the video signal in terms of instantaneous intensity can reach 30 Db. The energy gain of the video signal can reach 80 dB. The studied effects may be of interest when receiving weak cosmic video signals of both natural (holomorphic signals) and artificial (piecewise holomorphic signals) origin.