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Mathematical Analysis of Recent Analytical Approximations to the Collapse of an Empty Spherical Bubble
(American Institute Of Physics, 2013-02)
We analyze the Rayleigh equation for the collapse of an empty bubble and provide an explanation for some recent analytical approximations to the model. We derive the form of the singularity at the second boundary point and ...
Spherical collapse model in time varying vacuum cosmologies
(Physical Review D, 2010)
Spherical collapse in chameleon models
(Iop Publishing Ltd, 2010-08-01)
We study the gravitational collapse of an overdensity of nonrelativistic matter under the action of gravity and a chameleon scalar field. We show that the spherical collapse model is modified by the presence of a chameleon ...
Spherical collapse in chameleon models
(Iop Publishing Ltd, 2010-08-01)
We study the gravitational collapse of an overdensity of nonrelativistic matter under the action of gravity and a chameleon scalar field. We show that the spherical collapse model is modified by the presence of a chameleon ...
Extended spherical collapse and the accelerating universe
(Singapura, 2014-04-10)
The influence of the shear stress and angular momentum on the nonlinear spherical
collapse model is discussed in the framework of the Einstein–de Sitter and ΛCDM models.
By assuming that the vacuum component is not ...
N-dimensional Vaidya metric with a cosmological constant in double-null coordinates
(American Physical SocCollege PkEUA, 2007)
Dissipationless collapse of spherical protogalaxies and the fundamental plane
(E D P SciencesLes Ulis CedexaFrança, 2002)
Semianalytical approach for the Vaidya metric in double-null coordinates
(American Physical SocCollege PkEUA, 2004)