Abstract
An analysis of experimental data from the “Ulitka” high-frequency gravitational-gradient meter installed in the underground Baksan Neutrino Observatory of the Russian Academy of Sciences is presented, focusing on the planned use of this instrument as an “anti-coincidence filter” for the OGRAN gravitational-wave antenna. The statistics of the Ulitka noise background over a year’s observing are analyzed, and compared with the background measured earlier when Ulitka was located on the territory of the Sternberg Astronomical Institute in Moscow. A reduction in the rate of occurrence of large nonthermal spikes is noted. We have found associations between earthquakes and excitations of the seismically isolated high-frequency mode of the longitudinal oscillations of Ulitka.
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Original Russian Text © Yu.M. Gavrilyuk, A.V. Gusev, V.A. Krysanov, V.V. Kulagin, A.M. Motylev, S.I. Oreshkin, V.N. Rudenko, V.A. Silin, A.N. Tsepkov, 2012, published in Astronomicheskii Zhurnal, 2012, Vol. 89, No. 8, pp. 705–720.
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Gavrilyuk, Y.M., Gusev, A.V., Krysanov, V.A. et al. Analysis of the “Ulitka” noise background as an anti-coincidence filter for the OGRAN gravitational-wave antenna. Astron. Rep. 56, 638–652 (2012). https://doi.org/10.1134/S1063772912070013
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DOI: https://doi.org/10.1134/S1063772912070013