Testing general relativity in cosmology

M Ishak - Living Reviews in Relativity, 2019 - Springer
We review recent developments and results in testing general relativity (GR) at cosmological
scales. The subject has witnessed rapid growth during the last two decades with the aim of …

The intrinsic alignment of galaxies and its impact on weak gravitational lensing in an era of precision cosmology

MA Troxel, M Ishak - Physics Reports, 2015 - Elsevier
The wealth of incoming and future cosmological observations will allow us to map out the
structure and evolution of the observable universe to an unprecedented level of precision …

Dark energy

M Li, XD Li, S Wang, Y Wang - Communications in theoretical …, 2011 - iopscience.iop.org
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Late-time cosmology with 21 cm intensity mapping experiments

P Bull, PG Ferreira, P Patel… - The Astrophysical …, 2015 - iopscience.iop.org
We present a framework for forecasting cosmological constraints from future neutral
hydrogen intensity mapping experiments at low to intermediate redshifts. In the process, we …

The clustering of galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: testing deviations from Λ and general relativity using anisotropic clustering of …

L Samushia, BA Reid, M White… - Monthly Notices of …, 2013 - academic.oup.com
We use the joint measurement of geometry and growth from anisotropic galaxy clustering in
the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 9 (DR9) CMASS sample …

Viable models are practically indistinguishable from

S Nesseris, S Basilakos, EN Saridakis… - Physical Review D …, 2013 - APS
We investigate the cosmological predictions of several f (T) models, with up to two
parameters, at both the background and the perturbation levels. Using current cosmological …

Observational constraints on viable parametrizations with <?format ?>geometrical and dynamical probes

S Basilakos, S Nesseris, L Perivolaropoulos - Physical Review D—Particles …, 2013 - APS
We demonstrate that a wide range of viable f (R) parametrizations (including the Hu and
Sawicki and the Starobinsky models) can be expressed as perturbations deviating from the …

Constraints to dark energy using PADE parameterizations

M Rezaei, M Malekjani, S Basilakos… - The Astrophysical …, 2017 - iopscience.iop.org
We put constraints on dark energy (DE) properties using PADE parameterization, and
compare it to the same constraints using Chevalier–Polarski–Linder (CPL) and ΛCDM, at …

Dispersion of growth of matter perturbations in gravity

S Tsujikawa, R Gannouji, B Moraes, D Polarski - Physical Review D—Particles …, 2009 - APS
We study the growth of matter density perturbations δ m for a number of viable f (R) gravity
models that satisfy both cosmological and local gravity constraints, where the Lagrangian …

Testing general relativity at cosmological scales: implementation and parameter correlations

JN Dossett, M Ishak, J Moldenhauer - Physical Review D—Particles, Fields …, 2011 - APS
The testing of general relativity at cosmological scales has become a possible and timely
endeavor that is not only motivated by the pressing question of cosmic acceleration but also …