Relativistic Exploration of Dark Matter Effects in Rotating Galaxy, Studied Fluid-Dynamically

Abstract

Galactic space is filled with interstellar clouds of neutral gases Motion of the spaceclouds is viewed as a flow of continuous fluid in curved space with gravity Dynamical motions of the space-fluid of rotating galaxies are investigated by extending Fluid Dynamics to that in the frame of general relativity Fluid flow field to be extended to that of a relativistic theory is reinforced by the fluid gauge theory equipped with a background dark gauge field conditioning the fluid continuity The Gravity-space Fluid Dynamics thus developed captures main feature of the dark-matter effect as the action of the gauge field on the motion of space fluids In the present formulation the stress-energy tensor in the general relativity is revised in order to take account of general nature of stress field by extending the isotropic pressure to an-isotropic stress field