A test of the cosmological principle with quasars
NJ Secrest, S von Hausegger, M Rameez… - The Astrophysical …, 2021 - iopscience.iop.org
We study the large-scale anisotropy of the universe by measuring the dipole in the angular
distribution of a flux-limited, all-sky sample of 1.36 million quasars observed by the Wide …
distribution of a flux-limited, all-sky sample of 1.36 million quasars observed by the Wide …
The universe is brighter in the direction of our motion: Galaxy counts and fluxes are consistent with the CMB Dipole
J Darling - The Astrophysical Journal Letters, 2022 - iopscience.iop.org
An observer moving with respect to the cosmic rest frame should observe a concentration
and brightening of galaxies in the direction of motion and a spreading and dimming in the …
and brightening of galaxies in the direction of motion and a spreading and dimming in the …
A new way to test the Cosmological Principle: measuring our peculiar velocity and the large-scale anisotropy independently
We present a novel approach to disentangle two key contributions to the largest-scale
anisotropy of the galaxy distribution:(i) the intrinsic dipole due to clustering and anisotropic …
anisotropy of the galaxy distribution:(i) the intrinsic dipole due to clustering and anisotropic …
Peculiar motion of Solar system from the Hubble diagram of supernovae Ia and its implications for cosmology
AK Singal - Monthly Notices of the Royal Astronomical Society, 2022 - academic.oup.com
Peculiar motion of the Solar system, determined from the dipole anisotropy in the Cosmic
Microwave Background Radiation (CMBR), has given a velocity 370 km s− 1 along RA …
Microwave Background Radiation (CMBR), has given a velocity 370 km s− 1 along RA …
A tomographic test of cosmic anisotropy with the recently-released quasar sample
D Zhao, JQ Xia - The European Physical Journal C, 2021 - Springer
We test the cosmic anisotropy in the dipole-modulated Λ Λ CDM model and Finslerian
cosmological model with the recently-released quasar sample. Based on the redshift …
cosmological model with the recently-released quasar sample. Based on the redshift …
The deceleration parameter in 'tilted'universes: generalising the Friedmann background
CG Tsagas - The European Physical Journal C, 2022 - Springer
Large-scale bulk peculiar motions introduce a characteristic length scale, inside which the
local kinematics are dominated by peculiar-velocity perturbations rather than by the …
local kinematics are dominated by peculiar-velocity perturbations rather than by the …
A cross-correlation analysis of CMB lensing and radio galaxy maps
Aims. The goal of this work is to clarify the origin of the seemingly anomalously large
clustering signal detected at large angular separation in the wide TGSS radio survey and, in …
clustering signal detected at large angular separation in the wide TGSS radio survey and, in …
An Independent Measure of the Kinematic Dipole from SDSS
Abstract We utilize the Sloan Digital Sky Survey (SDSS) extended Baryon Oscillation
Spectroscopic Survey and Baryon Oscillation Spectroscopic Survey catalogs with precise …
Spectroscopic Survey and Baryon Oscillation Spectroscopic Survey catalogs with precise …
Testing the cosmological principle in the radio sky
CAP Bengaly, R Maartens… - … of Cosmology and …, 2019 - iopscience.iop.org
Abstract The Cosmological Principle states that the Universe is statistically isotropic and
homogeneous on large scales. In particular, this implies statistical isotropy in the galaxy …
homogeneous on large scales. In particular, this implies statistical isotropy in the galaxy …
Testing cosmic anisotropy with the Ep−Eiso ('Amati') correlation of GRBs
D Zhao, JQ Xia - Monthly Notices of the Royal Astronomical …, 2022 - academic.oup.com
We test the possible cosmic anisotropy in 118 long GRBs with the Ep− E iso ('Amati')
correlation by employing the dipole fitting (DF) and hemisphere comparison (HC) methods …
correlation by employing the dipole fitting (DF) and hemisphere comparison (HC) methods …