Observations of the gravitational gradient background using the Ulitka gravitational antennaстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The main parameters and statistical characteristics of the Sternberg Astronomical Institute solid-state gravitational antenna Ulitka are presented. The dynamics of the stochastic gravitational gradient background at frequency 1624 Hz have been measured using a three-month interval of continuous observations. An upper limit for the background is estimated, assuming that the antenna is excited by continuous and impulsive random isotropic sources; these estimates are in agreement with measurements on other similar installations. Means to increase the sensitivity of Ulitka without cooling are investigated. A program of astrophysical applications of this installation is discussed.