Spherically symmetric nonlinear structures

We present an analytical method to extract observational predictions about the nonlinear evolution of perturbations in a Tolman universe. We assume no a priori profile for them. We solve perturbatively a Hamilton-Jacobi equation for a timelike geodesic and obtain the null one as a limiting case in t...

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Autor principal: Calzetta, E.A
Otros Autores: Kandus, A.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1997
Acceso en línea:Registro en Scopus
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100 1 |a Calzetta, E.A. 
245 1 0 |a Spherically symmetric nonlinear structures 
260 |c 1997 
506 |2 openaire  |e Política editorial 
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520 3 |a We present an analytical method to extract observational predictions about the nonlinear evolution of perturbations in a Tolman universe. We assume no a priori profile for them. We solve perturbatively a Hamilton-Jacobi equation for a timelike geodesic and obtain the null one as a limiting case in two situations: for an observer located in the center of symmetry and for a noncentered one. In the first case we find expressions to evaluate the density contrast and the number count and luminosity distance versus redshift relationships up to second order in the perturbations. In the second situation we calculate the CMBR anisotropies at large angular scales produced by the density contrast and by the asymmetry of the observer’s location, up to first order in the perturbations. We develop our argument in such a way that the formulas are valid for any shape of the primordial spectrum. © 1997 The American Physical Society.  |l eng 
593 |a Instituto de Astronomía y Física del Espacio (IAFE), Buenos Aires, Argentina 
700 1 |a Kandus, A. 
773 0 |d 1997  |g v. 55  |h pp. 1795-1811  |k n. 4  |p Phys Rev D Part Fields Gravit Cosmol  |x 15507998  |t Physical Review D - Particles, Fields, Gravitation and Cosmology 
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856 4 0 |u https://doi.org/10.1103/PhysRevD.55.1795  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_15507998_v55_n4_p1795_Calzetta  |y Handle 
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