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  • ANTUNES MARQUES, GABRIELA (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2019-07-17)
    The photons propagating in the Universe have their trajectories disturbed due to the presence of massive structures along the line-of-sight, producing the so-called gravitational lensing effect. Because it is sensitive to ...
  • ANTUNES MARQUES, GABRIELA (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2015-07-23)
    Observations of temperature and polarization of the cosmic microwave background (CMB) provide important information of the early universe. The CMB temperature fluctuations are related to the perturbations from inflationary ...
  • BESSA RODRIGUES DUTRA, PEDRO HENRIQUE (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2020-07-21)
    The Integrated Sachs-Wolfe effect is a Cold Microwave Background observable particularly sensitive to the change in cosmological eras dominated by different mat- ter components. Its temperature power spectrum is a strong ...
  • DA SILVA AVILA, FELIPE (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2018-02-27)
    The standard model of cosmology is based on the Cosmological Principle (CP), which states that, on large scales, the Universe is homogeneous and isotropic. It predicts that the transition from an inhomogenous to a homogeous ...
  • DE CARVALHO FILHO, EDILSON (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2019-12-11)
    Abstract The large scale structure of the Universe has been studied at several redshifts using different cosmic tracers. Among the methods employed, the search for the signature of the baryon acoustic oscillations (BAO) ...
  • LARANJEIRA, SERGIO EDUARDO (Observatorio NacionalDivisão de Programas de Pós-Graduação - DIPPGBrasilONPrograma de Pós-Graduação em Astronomia, 2017-07-07)
    Recent observational data suggest that, from the total content of the universe, ∼ 26% is in the form of the so-called Dark Matter (DM). At present, there is no settled understanding of its nature. On the other hand, galactic ...