ИСТИНА

Search for cosmic strings in the Universe using the methods of radio astronomy is discussed. It is analyzed the structure of anisotropy of the CMBR induced by a single straight moving string on the background of the adiabatic CMBR anisotropy (with temperature amplitude $100 \mu K$). Using two independent data set by WMAP and "Planck" by our group it was shown that in the observable Universe there are no strings with temperature amplitudes more than $40 \mu K$. The proposed convolution method is able to detect strings at the level $10 \mu K$. In the last case the candidates has to be investigated by cross-matching with ultra deep field optical data.