Role of Pressure in Quasi-Spherical Gravitational Collapse
نویسندگان
چکیده
We study quasi-spherical Szekeres space-time (which possess no killing vectors) for perfect fluid, matter with tangential stress only and matter with anisotropic pressure respectively. In the first two cases cosmological solutions have been obtained and their asymptotic behaviour have been examined while for anisotropic pressure, gravitational collapse has been studied and the role of the pressure has been discussed.
منابع مشابه
The effect of Pressure in Higher Dimensional Quasi-Spherical Gravitational Collapse
We study gravitational collapse in higher dimensional quasi-spherical Szekeres space-time for matter with anisotropic pressure. Both local and global visibility of central curvature singularity has been studied and it is found that with proper choice of initial data it is possible to show the validity of CCC for six and higher dimensions. Also the role of pressure in the collapsing process has ...
متن کاملRole of Initial Data in Higher Dimensional Quasi-Spherical Gravitational Collapse
X iv :g rqc /0 30 80 37 v1 1 2 A ug 2 00 3 Role of Initial Data in Higher Dimensional Quasi-Spherical Gravitational Collapse Ujjal Debnath and Subenoy Chakraborty Department of Mathematics, Jadavpur University, Calcutta-32, India. (Dated: February 7, 2008) We study the gravitational collapse in (n+2)-D quasi-spherical Szekeres space-time (which possess no killing vectors) with dust as the matte...
متن کاملQuasi-Spherical Gravitational Collapse in higher dimension and the effect of equation of state
Gravitational collapse in (n+2) dimensional quasi-spherical space-time is studied for a fluid with non vanishing radial pressure. An exact analytic solution is obtained (ignoring the arbitrary integration function) for the equation of state pr = (γ − 1)ρ. The singularity is studied locally by comparing the time of formation of apparent horizon and the central shell focusing singularity while th...
متن کاملQuasi-spherical gravitational collapse and the role of initial data, anisotropy and inhomogeneity
Gravitational collapse is an important and challenging issue in Einstein gravity for the last two decades or more, particularly after the formation of famous singularity theorems [1] and Cosmic Censorship Conjecture (CCC) [2]. Moreover, the final outcome of gravitational collapse [3] in the background of general relativity is interesting both from the point of view of black hole physics as well...
متن کاملAmplification of Primordial Magnetic Fields by Anisotropic Gravitational Collapse
If a magnetic field is frozen into a plasma that undergoes spherical compression then the magnetic field B varies with the plasma density ρ according to B ∝ ρ. In the gravitational collapse of cosmological density perturbations, however, quasi-spherical evolution is very unlikely. In anisotropic collapses the magnetic field can be a much steeper function of gas density than in the isotropic cas...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005