
TY  - JOUR
A1  - Cook, MW 
T1  - On a Class of Exact Spherically Symmetric Solutions to the Einstein Gravitational Field Equations
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1975
VL  - 28
IS  - 4
SP  - 413
EP  - 422
KW  - 
UR  - https://doi.org/10.1071/PH750413 
N2  - This paper presents a development of a well-known class of Einstein gravitational fields which describe, in comoving coordinates, spherically symmetric perfect fluids with spatially uniform density but with nonuniform pressure. It is noted that the sign of the spatial curvature or these distributions may vary with time, in contrast with the situation for the uniform model theory used in most cosmological applications. It is shown, however, that this entails physically unacceptable behaviour of the fluid. In conclusion there is given a preliminary investigation of isolated fluid spheres, and a description of their noncovariant 'spatial geometry' is discussed. 
ER  -

