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- W1966388380 abstract "Many previous studies of general relativistic perfect fluids have been assumed that the geometry is hypersurface homogeneous. With the additional requirement of self-similarity, this leads to solutions which are invariant under a similarity group that acts transitively on the entire spacetime. The authors investigate the 'simplest' self-similar situations where this is not the case. The spacetimes admit a four-parameter similarity group, whose orbits are spacelike hypersurfaces which are orthogonal to the fluid flow. They also introduce a generalisation of the notion of self-similarity. In the analogous 'simplest' case, they consider all possible solutions in a unified manner, for a fluid which obeys a barotropic equation of state. The authors' discussion of the entire class enables them to obtain all accelerating solutions in closed form and serves to characterise several previous studies in a geometrically invariant way, thereby shedding light on their interconnections." @default.
- W1966388380 created "2016-06-24" @default.
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- W1966388380 date "1987-01-01" @default.
- W1966388380 modified "2023-10-01" @default.
- W1966388380 title "A class of self-similar perfect-fluid spacetimes, and a generalisation" @default.
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- W1966388380 doi "https://doi.org/10.1088/0264-9381/4/1/009" @default.
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