Relativistic Fluid Spheres and Noncomoving Coordinates. I

Details Relativistic Fluid Spheres and Noncomoving Coordinates. I Relativistic Fluid Spheres and Noncomoving Coordinates. I

Feb 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ijtp...16..121m&link_type=abstract

International Journal of Theoretical Physics, Volume 16, Issue 2, pp.121-140

Physics

8

Scientific paper

Spherically symmetric relativistic spheres of perfect fluid are defined to be isotropic by Walker's (1935) isotropy condition. This condition permits the use of noncomoving coordinate systems, which, it is argued, are preferable to comoving systems in certain situations. It is assumed that these systems are such that the metric is orthogonal and involves three unknown functions. These functions are obtained by solving the equation expressing the isotropy condition in a number of cases defined by ancillary mathematical assumptions. Formulas are given for the pressure, density, and velocity components of the fluid, but the detailed physical analysis of the various cases found is reserved for a subsequent paper.

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