Cosmology intertwined: A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies
Abstract The standard Λ Cold Dark Matter (ΛCDM) cosmological model provides a good
description of a wide range of astrophysical and cosmological data. However, there are a …
description of a wide range of astrophysical and cosmological data. However, there are a …
Potential signature of a quadrupolar hubble expansion in Pantheon+ supernovae
JA Cowell, S Dhawan… - Monthly Notices of the …, 2023 - academic.oup.com
The assumption of isotropy–that the Universe looks the same in all directions on large
scales–is fundamental to the standard cosmological model. It is therefore critical to …
scales–is fundamental to the standard cosmological model. It is therefore critical to …
An effective description of Laniakea: impact on cosmology and the local determination of the Hubble constant
We propose an effective model to describe the bias induced on cosmological observables
by Laniakea, the gravitational supercluster hosting the Milky Way, which was defined using …
by Laniakea, the gravitational supercluster hosting the Milky Way, which was defined using …
The Zwicky Transient Facility Type Ia supernova survey: first data release and results
ABSTRACT Type Ia supernovae (SNe Ia) in the nearby Hubble flow are excellent distance
indicators in cosmology. The Zwicky Transient Facility (ZTF) has observed a large sample of …
indicators in cosmology. The Zwicky Transient Facility (ZTF) has observed a large sample of …
Testing spatial curvature and anisotropic expansion on top of the ΛCDM model
We explore the possible advantages of extending the standard Λ CDM model by more
realistic backgrounds compared to its spatially flat Robertson–Walker (RW) spacetime …
realistic backgrounds compared to its spatially flat Robertson–Walker (RW) spacetime …
Is there really a Hubble tension?
M Rameez, S Sarkar - Classical and Quantum Gravity, 2021 - iopscience.iop.org
The heliocentric redshifts (z hel) reported for 150 type Ia supernovae in the Pantheon
compilation are significantly discrepant from their corresponding values in the JLA …
compilation are significantly discrepant from their corresponding values in the JLA …
The quadrupole in the local Hubble parameter: first constraints using Type Ia supernova data and forecasts for future surveys
The cosmological principle asserts that the Universe looks spatially homogeneous and
isotropic on sufficiently large scales. Given its fundamental implications, it is important to …
isotropic on sufficiently large scales. Given its fundamental implications, it is important to …
A prediction for anisotropies in the nearby Hubble flow
A Heinesen, HJ Macpherson - Journal of Cosmology and …, 2022 - iopscience.iop.org
We assess the dominant low-redshift anisotropic signatures in the distance-redshift relation
and redshift drift signals. We adopt general-relativistic irrotational dust models allowing for …
and redshift drift signals. We adopt general-relativistic irrotational dust models allowing for …
Multipole expansion of the local expansion rate
B Kalbouneh, C Marinoni, J Bel - Physical Review D, 2023 - APS
We design a new observable, the expansion rate fluctuation η, to characterize deviations
from the linear relation between redshift and distance in the local universe. We also show …
from the linear relation between redshift and distance in the local universe. We also show …
The averaging problem on the past null cone in inhomogeneous dust cosmologies
Cosmological models typically neglect the complicated nature of the spacetime mani-fold at
small scales in order to hypothesize idealized general relativistic solutions for describing the …
small scales in order to hypothesize idealized general relativistic solutions for describing the …