The impact of braiding covariance and in-survey covariance on next-generation galaxy surveys
Sign Up to like & getrecommendations! Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201936683
Abstract: As galaxy surveys become more precise and push to smaller scales, the need for accurate covariances beyond the classical Gaussian formula becomes more acute. Here, I investigate the analytical implementation and impact of non-Gaussian covariance… read more here.
Keywords: impact braiding; survey; braiding covariance; galaxy surveys ... See more keywords
Non-linear damping of superimposed primordial oscillations on the matter power spectrum in galaxy surveys
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2020/04/030
Abstract: Galaxy surveys are an important probe for superimposed oscillations on the primordial power spectrum of curvature perturbations, which are predicted in several theoretical models of inflation and its alternatives. In order to exploit the full… read more here.
Keywords: matter; power spectrum; non linear; galaxy surveys ... See more keywords
Investigating the constraints on primordial features with future cosmic microwave background and galaxy surveys
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2022/09/024
Abstract: In this article, we do a thorough investigation of the competency of the forthcoming Cosmic Microwave Background (CMB) and Galaxy surveys in probing the features in the primordial power spectrum. Primordial features are specific model-dependent… read more here.
Keywords: primordial features; microwave background; cosmic microwave; cosmology ... See more keywords
Gravitational wave astronomy with radio galaxy surveys
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx835
Abstract: In the next decade, new astrophysical instruments will deliver the first large-scale maps of gravitational waves and radio sources. Therefore, it is timely to investigate the possibility to combine them to provide new and complementary… read more here.
Keywords: gravitational wave; astronomy; radio; wave astronomy ... See more keywords
Combining gravitational lensing and gravitational redshift to measure the anisotropic stress with future galaxy surveys
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.107.083526
Abstract: Galaxy surveys provide one of the best ways to constrain the theory of gravity at cosmological scales. They can be used to constrain the two gravitational potentials encoding time, $\Psi$, and spatial, $\Phi$, distortions, which… read more here.
Keywords: anisotropic stress; measure anisotropic; combining gravitational; redshift ... See more keywords