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Backgrounds depending on time and on "angular" variable, namely polarized andunpolarized $S^1 \times S^2$ Gowdy models, are generated as the sector insidethe horizons of the manifold corresponding to axisymmetric solutions. As isknown, an analytical continuation of ordinary $D$-branes, $iD$-branes allowsone to find $S$-brane solutions. Simple models have been constructed by meansof analytic continuation of the Schwarzchild and the Kerr metrics. Thepossibility of studying the $i$-Gowdy models obtained here is outlined with aneye toward seeing if they could represent some kind of generalized $S$-branesdepending not only on time but also on an ``angular'' variable.Comment: 24 pages, 5 figures, corrected typos, references adde

Time and “angular” dependent backgrounds from stationary axisymmetric solutions