arXiv Analytics

Sign in

arXiv:astro-ph/0610370AbstractReferencesReviewsResources

Galactic Dynamics via General Relativity: A Compilation and New Developments

F. I. Cooperstock, S. Tieu

Published 2006-10-12Version 1

We consider the consequences of applying general relativity to the description of the dynamics of a galaxy, given the observed flattened rotation curves. The galaxy is modeled as a stationary axially symmetric pressure-free fluid. In spite of the weak gravitational field and the non-relativistic source velocities, the mathematical system is still seen to be non-linear. It is shown that the rotation curves for various galaxies as examples are consistent with the mass density distributions of the visible matter within essentially flattened disks. This obviates the need for a massive halo of exotic dark matter. We determine that the mass density for the luminous threshold as tracked in the radial direction is $10^{-21.75}$ kg$\cdot$m$^{-3}$ for these galaxies and conjecture that this will be the case for other galaxies yet to be analyzed. We present a velocity dispersion test to determine the extent, if of any significance, of matter that may lie beyond the visible/HI region. Various comments and criticisms from colleagues are addressed.

Comments: 35 pages, 13 figures
Journal: Int.J.Mod.Phys.A22:2293-2325,2007
Categories: astro-ph, gr-qc, hep-th
Related articles: Most relevant | Search more
arXiv:astro-ph/0512553 (Published 2005-12-22)
Comments on "Perspectives on Galactic Dynamics via General Relativity"
arXiv:astro-ph/0512048 (Published 2005-12-02)
Perspectives on Galactic Dynamics via General Relativity
arXiv:astro-ph/0007046 (Published 2000-07-05)
Riemannian collineations in General Relativity and in Einstein-Cartan cosmology