2007/01/31 by Hristu Culetu, HRISTU CULETU · 2 citations
Physics and Astronomy · #Astrophysical Phenomena and Observations #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #astro-ph #hep-th
paper · pdf · doi:10.1142/s0217751x09045066
published as Int.J.Mod.Phys.A24:1593-1597,2009 · 6 pages,one reference added, minor changes, no figures
arxiv created 2007/03/07 · openalex publication_date 2009/04/09 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
A spacetime endowed with an anisotropic fluid is proposed for the interior of a black hole. The geometry has an instantaneous Minkowski form and is a solution of Einstein's equations with a stress tensor on the r.h.s. obeying all the energy conditions. The interior fluid is compressible, with time dependent shear and bulk viscosity coefficients. The energy density ρ and the "radial" pressure p are proportional to 1/t 2 , with no pressures on θ- and ϕ- directions. The model leads to a time dependent cosmological constant.