Open AccessOn radiating stellar collapse with shear
Author(s) -
Govinder Kesh S.,
Govender Megan,
Maartens Roy
Publication year - 1998
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.1365-8711.1998.01823.x
Subject(s) - physics , ansatz , isotropy , shear (geology) , classical mechanics , radiation pressure , gravitational collapse , metric (unit) , astrophysics , mechanics , mathematical physics , optics , petrology , operations management , economics , geology
Relativistic models of radiating stellar collapse with shear require careful checking of all the equations and quantities involved. We illustrate this by showing that, in a recently proposed model, the metric ansatz is in fact too restrictive to allow any radial evolution to occur, and only tangential evolution is possible. Furthermore, the assumption of pressure isotropy is shown to reduce the model to the static case without radiation or shear.