Gravitational Lenses
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Efeitos das inomogeneidades da matéria em Cosmologias Aceleradas
Os recentes avanços observacionais da Astronomia e um arcabouço teórico cada vez mais consistente, transformaram a Cosmologia numa das mais excitantes áreas da ciência contemporânea. Nesta tese, modelos homogêneos e inomogêneos contendo matéria escura e diferentes tipos de energia escura são confrontados com dados observacionais recentes. Inicialme
Publicado em: 2007
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2. Braneworld black holes as gravitational lenses
Black holes acting as gravitational lenses produce, besides the primary and secondary weak field images, two infinite sets of relativistic images. These images can be studied using the strong field limit, an analytic method based on a logarithmic asymptotic approximation of the deflection angle. In this work, braneworld black holes are analyzed as gravitatio
Brazilian Journal of Physics. Publicado em: 2005-12
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3. Scaling the universe: Gravitational lenses and the Hubble constant
Gravitational lenses, besides being interesting in their own right, have been demonstrated to be suitable as “gravitational standard rulers” for the measurement of the rate of expansion of the Universe (Ho), as well as to constrain the values of the cosmological parameters such as Ωo and Λo that control the evolution of the volume of the Universe
The National Academy of Sciences.
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4. Gravitational lensing of active galactic nuclei.
Most of the known cases of strong gravitational lensing involve multiple imaging of an active galactic nucleus. The properties of lensed active galactic nuclei make them promising systems for astrophysical applications of gravitational lensing; in particular, they show structure on scales of milliseconds of arc to tens of seconds of arc, they are variable, a