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Three-dimensional warped anti-de Sitter space in topologically massivegravity with a negative cosmological constant has been proposed to beholographically dual to a two-dimensional conformal field theory. We extendthis proposal to both positive and vanishing values of the cosmologicalconstant where stretched warped anti-de Sitter space is found to be a solution.For positive cosmological constant, another class of warped solutions isobtained by a spacelike (timelike) line fibration over Lorentzian (Euclidean)two-dimensional de Sitter space. These solutions exhibit a cosmological horizonand Hawking temperature much like de Sitter space. Global identifications ofthis warped de Sitter space may contain a horizon in addition to thecosmological one. At a degenerate point, warped de Sitter space becomes afibration over two-dimensional flat space. Finally, we study scalar waves inthese backgrounds. Scalars in stretched warped anti-de Sitter space exhibitsuperradiance which can be interpreted as Schwinger pair production of chargedparticles in two-dimensional anti-de Sitter space.

Sailing from Warped AdS_3 to Warped dS_3 in Topologically Massive Gravity