Open AccessRadiating gravitational collapse with shear viscosity
Author(s) -
Chan R.
Publication year - 2000
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2000.03547.x
Subject(s) - physics , isotropy , adiabatic process , shearing (physics) , gravitational collapse , mechanics , classical mechanics , anisotropy , astrophysics , shear (geology) , radiation pressure , volume viscosity , viscosity , thermodynamics , optics , petrology , geology
A model is proposed of a collapsing radiating star consisting of an isotropic fluid with shear viscosity undergoing radial heat flow with outgoing radiation. The pressure of the star, at the beginning of the collapse, is isotropic but owing to the presence of the shear viscosity the pressure becomes more and more anisotropic. The behaviour of the density, pressure, mass, luminosity and the effective adiabatic index is analysed. Our work is compared to the case of a collapsing shearing fluid of a previous model, for a star with 6 M ⊙ .