ИСТИНА

A brief review of present situation in development of GW detector technique is described. Current upper limits of GW radiation from main classes of relativistic astrophysical objects are given. Strategy of multichannel search for, - so called "multi messenger astronomy" is discussed. It is associated with the properties of three types of transient astrophysical sources that are well known in the EM spectrum. These sources are expected to produce transient GW signals in the laser interferometric detector frequency range, and possibly neutrino fluxes as well. In that number there are 1) coalescence of NS and BH binary systems, 2) core collapsing stars, 3) flaring/bursting NSs. Joint GW+EM and neutrino observations are expected to provide a wealth of information among which: a) improvement in the confidence in first GW detection, b) useful priors in GW data analysis parameter space , c) complement our knowlege of the physics of sources. Algorithms of joint multichannel data processing are under development. Past results from MM searches show no significant coincident events and obtained upper limits on the energetics in GW and source rate density did not provided strong contraints on astrophysical models. However for the advanced detectors, starting from 2018 year probed distances are expected to contain significant number of GW sources localized in few degrees areas in the sky and the more then ten MoU partners will ensure EM and neutrino monitoring.