Infinite Lorentz boost along the [Formula presented]-theory circle and nonasymptotically flat solutions in supergravities

Certain nonasymptotically flat but supersymmetric classical solutions of type IIA supergravity can be interpreted as the infinitely boosted version of the (Formula presented) particle solution along the (Formula presented)-theory circle. By a chain of (Formula presented)-dual transformations, this analysis also applies to yield nonasymptotically flat solutions from the asymptotically flat and (non)extremal solutions with intersecting (Formula presented) strings and (Formula presented) five-branes of type IIB supergravity compactified on a five-torus. Under (Formula presented) duality, the nonasymptotically flat solutions in this context can in particular be used to describe the (1+1)-dimensional Callan-Giddings-Harvey-Strominger type black holes via spontaneous compactifications.