Related references
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Article
Astronomy & Astrophysics
Kunio Kaneta et al.
Summary: Despite being the least understood component in the universe, dark energy plays a dominant role in its energy budget. A new model is presented where dark energy is described by a complex scalar and is gauged by an Abelian gauge symmetry. This model brings interesting characters to dark energy physics and has the potential to alleviate the Hubble tension.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Astronomy & Astrophysics
Eleonora Di Valentino et al.
Summary: In this study, the global agreement between observations of the cosmic microwave background (CMB) from the Atacama Cosmology Telescope and the Planck satellite is examined in different cosmological models with additional parameters. The Suspiciousness statistic is used to quantify the tension between the two experiments. Results show that the tension is reduced to 1.8 sigma when the effective number of relativistic particles is lower than the standard value, and ranges between 2.3 sigma and 3.5 sigma in other extended models.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Anowar J. Shajib et al.
Summary: Strong-lensing time delays can independently measure the Hubble constant (H0). The precision of this method is limited by mass-sheet degeneracy (MSD). Previous analyses broke the MSD assumption about lens mass density profile, but it might introduce bias or underestimate errors. In this work, the MSD was broken for the first time using kinematics data combined with time delay and lens models, leading to an accurately estimated H0.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
R. Brent Tully et al.
Summary: Distances of 55,877 galaxies in 38,065 groups were measured using Cosmicflows-4, employing eight methodologies with the largest contributions coming from correlations between the properties of spiral and elliptical galaxies. The final compilation of distances is compatible with a Hubble constant value of 74.6 km s(-1) Mpc(-1) with a small statistical error but a large potential systematic error. Peculiar velocities can be inferred from the measured distances, but the interpretation is complex due to large errors and goes beyond the scope of this study.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Suhail Dhawan et al.
Summary: We estimate the Hubble constant (H-0) using the hierarchical Bayesian SED model, BayeSN, and two independent distance indicators (Cepheids or TRGB). The estimated values of H-0 are 74.82 +/- 0.97 km s(-1) Mpc(-1) when using Cepheid distances and 70.92 +/- 1.14 km s(-1) Mpc(-1) when using TRGB distances. The simultaneous modelling of optical and NIR data reduces the uncertainty in H-0 compared to using optical data alone.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
William Giare et al.
Summary: The Data Release 4 of the Atacama Cosmology Telescope (ACT) shows an agreement with a Harrison-Zel'dovich primordial spectrum, introducing a tension with the results from the Planck satellite. This discrepancy on the value of the scalar spectral index is not alleviated with the addition of large scale structure information or low multipole polarization data. Possible avenues to alleviate the tension are discussed, including neglecting polarization measurements from ACT or extending different sectors of the theory.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Yi-Ying Wang et al.
Summary: By analyzing the multimessenger data of GW170817, we have found a relatively large viewing angle and obtained a Hubble constant value that is more consistent with other local measurements. If similar values are obtained from multimessenger data of future neutron star merger events, it will provide critical support to the existence of the Hubble tension.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Armando Bernui et al.
Summary: In this study, we use a compilation of 15 measurements of the 2D baryon acoustic oscillation (BAO) scale and Planck-CMB data to explore a class of interacting dark energy (DE) and dark matter (DM) cosmological models. We find that 2D BAO measurements can provide different observational constraints compared to the traditional 3D BAO measurements. Contrary to previous observations, Planck-CMB + 2D BAO data suggest higher values for the Hubble constant H0. Through joint analysis with additional Gaussian prior on H0, we conclude that the H0 tension is resolved in the interacting DE model with strong statistical evidence (more than 3 sigma).
Article
Astronomy & Astrophysics
Adam B. Mantz et al.
Summary: The study presents new cosmological constraints based on measurements of gas mass fractions of massive galaxy clusters, providing insights into dark energy and cosmic parameters. By combining observations from different redshifts, cosmic microwave background data, and other sources, the team derived important information on cosmic parameters and dark energy properties.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Review
Astronomy & Astrophysics
Elcio Abdalla et al.
Summary: The paper discusses the limitations of the standard Lambda Cold Dark Matter (Lambda CDM) cosmological model and proposes new physics models to alleviate the tensions in various cosmological measurements. The authors emphasize the importance of considering a wide range of data and discuss the significance of upcoming experiments and space missions in addressing open questions in cosmology.
JOURNAL OF HIGH ENERGY ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
L. Perivolaropoulos et al.
Summary: In recent years, challenges to the standard ACDM model have been emerging as cosmological observations improve. This review discusses various signals in cosmological and astrophysical data that are in tension with the standard ACDM model, such as the Hubble tension, growth tension, and lensing amplitude anomaly, as well as other less-discussed signals that may hint towards new physics. The goal is to provide an update on the current status of these signals, particularly the Hubble tension, and refer readers to additional resources for more details.
NEW ASTRONOMY REVIEWS
(2022)
Article
Astronomy & Astrophysics
Adam G. Riess et al.
Summary: This study reports observations of Cepheid variables in the host galaxies of 42 Type Ia supernovae (SNe Ia) using the Hubble Space Telescope (HST) to calibrate the Hubble constant (H (0)). The observations were collected over four decades and significantly improved the precision of the direct determination of H (0). The study presented multiple verifications of Cepheid photometry and explored different analysis variants to assess the sensitivity of H (0) determination. The baseline result for H (0) was found to be 73.04 +/- 1.04 km s(-1) Mpc(-1).
ASTROPHYSICAL JOURNAL LETTERS
(2022)
Article
Astronomy & Astrophysics
T. de Jaeger et al.
Summary: This study measures the Hubble-Lemaitre constant using Type II supernovae and finds consistent results with the local measurement, but different from the value inferred via Planck+ ACDM. The research does not indicate that SNe Ia or Cepheids are the sources of the Hubble tension. However, more samples are needed to verify the results.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Review
Astronomy & Astrophysics
Eleonora Di Valentino
Summary: Measurements of the CMB's temperature and polarization anisotropy provide evidence supporting the vanilla flat Lambda CDM model of structure formation. However, discrepancies and anomalies have been observed in cosmological and astrophysical observations, suggesting possible shortcomings in the standard Lambda CDM cosmological scenario.
Article
Astronomy & Astrophysics
Adam G. Riess et al.
Summary: This study presents measurements of the photometry and mean parallax of 17 Cepheids using data from Gaia and the Hubble Space Telescope. The results demonstrate the accuracy and reliability of these measurements in determining the Hubble constant and provide a possible solution to the Hubble tension. The study also highlights the importance of combining different measurement techniques to reduce uncertainties and improve our understanding of the universe.
ASTROPHYSICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
Stefano Gariazzo et al.
Summary: In this manuscript, we reassess the potential of interacting dark matter-dark energy models in solving the Hubble constant tension. We examine several interacting scenarios against cosmological observations, focusing on the important role played by the calibration of supernovae data. Our results show that interacting cosmologies with a dark energy equation of state w < -1 are preferred over the canonical lambda CDM picture and provide values of sigma 8 in perfect agreement with those from weak lensing surveys.
Article
Astronomy & Astrophysics
Rafael C. Nunes et al.
Summary: In this study, we explore the role of redshift-space galaxy clustering data in constraining nongravitational interactions between dark energy (DE) and dark matter (DM). By combining the data from galaxy power spectrum and Baryon Acoustic Oscillation (BAO) measurements with Cosmic Microwave Background (CMB) data, we obtain one of the strongest limits on the DM-DE coupling strength. Contrary to previous observations, we find that the combination of CMB and full-shape (FS) galaxy power spectrum returns tighter constraints compared to the combination of CMB and BAO, indicating valuable additional information in the broadband of the power spectrum. Our results highlight the critical role of redshift-space galaxy clustering measurements in precision cosmology.
Article
Astronomy & Astrophysics
Marika Asgari et al.
Summary: The study presents cosmological constraints using the fourth data release of the Kilo-Degree Survey (KiDS-1000), revealing tension with the Planck Legacy analysis predictions. The results from the fiducial COSEBIs analysis align well with other complementary analyses, indicating robust S-8 constraints dominated by statistical errors.
ASTRONOMY & ASTROPHYSICS
(2021)
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Astronomy & Astrophysics
Eleonora Di Valentino
Summary: The study combines multiple measurements of the Hubble constant, resulting in an optimistic estimate of H-0 = 72.94 +/- 0.75 km s(-1) Mpc(-1), significantly different from the ACDM model. The research also highlights various new phenomena that emerge in different dark energy cosmological models, such as phantom dark energy and coupling between dark matter and dark energy.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Weiqiang Yang et al.
Summary: Current cosmological data analyses show that a closed universe and interacting scenarios are attractive options for resolving the Hubble constant tension. However, the viability of these scenarios as global solutions to cosmological tensions may be compromised when considering other possible cosmological observations.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Ashadul Halder et al.
Summary: The study investigates the combined effects of primordial black holes, interactions between dark matter and baryonic matter, as well as dark matter and dark energy fluid on the 21-cm brightness temperature. The results show that the variation of brightness temperature depends significantly on the mass of dark matter and the scattering cross-section between dark matter and baryonic matter. Parameter constraints are obtained based on experimental data for different masses of primordial black holes and interaction dark energy models, while also addressing the compatibility of the constraints within these models.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Eleonora Di Valentino et al.
Summary: Current cosmological probes have confirmed the standard A Cold Dark Matter cosmological model with unprecedented accuracy, but tensions between different independent cosmological datasets have emerged. These tensions may indicate issues with the standard cosmological scenario and the potential need for new physics.
ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
John P. Blakeslee et al.
Summary: A measurement of the Hubble constant H (0) was presented using surface brightness fluctuation distances for 63 bright, mainly early-type galaxies out to 100 Mpc. The result derived from a weighted average of Cepheid and TRGB calibrations is H (0) = 73.3 +/- 0.7 +/- 2.4 km s(-1) Mpc(-1), consistent with recent measurements from other methods. Systematic uncertainties could be reduced below 2% by calibrating the SBF method with precise TRGB distances for a statistical sample of massive early-type galaxies.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
Matteo Lucca
Summary: The study examines a dynamic fluid model of dark energy that shows promising results in addressing the S-8 tension without significantly impacting other tensions or fit to the data sets.
PHYSICS OF THE DARK UNIVERSE
(2021)
Review
Astronomy & Astrophysics
Eleonora Di Valentino et al.
Summary: There are significant discrepancies in predictions of the Hubble constant, leading to various proposed solutions including new physics theories or modifications to existing cosmological models. Some solutions successfully reduce tension and improve agreement with data, while many others fail to do so, highlighting the need for further research and evidence.
CLASSICAL AND QUANTUM GRAVITY
(2021)
Article
Astronomy & Astrophysics
Li-Yang Gao et al.
Summary: The study investigates an extended cosmological model based on the asymptotic safety of gravitational field theory, where matter and radiation densities, and the cosmological constant are corrected by parameters delta(G) and delta(Lambda) causing deviations from the standard forms. Two cases of the model are considered and constrained using different data combinations, leading to the conclusion that the interacting dark energy model (Λ) tilde CDM is more effective in alleviating the H-0 tension and fitting the current observational data compared to Lambda(t)CDM.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Suresh Kumar
Summary: This study explores the non-minimal interaction in the dark sector and conducts comparative analyses with various observational data sources, revealing that the interaction models perform better in alleviating tensions in the ACDM cosmology.
PHYSICS OF THE DARK UNIVERSE
(2021)
Article
Astronomy & Astrophysics
Yan-Hong Yao et al.
Summary: In this study, a new coupled generalized three-form dark energy model is proposed and analyzed with observational data to constrain model parameters, showing the importance of parameters alpha and beta in reducing the H-0 tension. Compared with other models, the coupled generalized three-form dark energy model is found to have less support from CMB, BAO, and SN Ia datasets, but its dynamical behavior is equivalent to a quintom dark energy model.
PHYSICS OF THE DARK UNIVERSE
(2021)
Article
Physics, Multidisciplinary
Karsten Jedamzik et al.
Summary: The Hubble tension, a discrepancy between the locally measured expansion rate of the universe and that inferred from the cosmic microwave background measurements, has become a pressing issue in cosmology. Various modifications to the ΛCDM model have been proposed to address this tension, but models that only reduce the sound horizon r(*) cannot fully resolve the issue while remaining consistent with other cosmological datasets.
COMMUNICATIONS PHYSICS
(2021)
Article
Astronomy & Astrophysics
Matteo Lucca
Summary: In the effort to address the Hubble tension, it is necessary to consider models that can modify the expansion and thermal history of the Universe, while maintaining overall concordance between early and late-time observations. A multi-interacting dark energy model with two complementary interaction channels has been explored, showing potential in resolving the S-8 tension but ultimately unable to restore the overall concordance between early and late-time observations.
Article
Astronomy & Astrophysics
Rafael C. Nunes et al.
Summary: This study provides robust constraints on the supernova absolute magnitude MB using different data and models, confirming that a non-gravitational interaction between dark energy and dark matter (IDE model) can alleviate the tension on MB to a certain extent.
Article
Astronomy & Astrophysics
Eleonora Di Valentino et al.
Summary: Recent measurements by the Planck satellite suggest a preference for a closed universe, but this conflicts with low redshift observables such as Type Ia supernovae luminosity distances. Interacting dark energy models could help reconcile these discrepancies in a closed Universe, indicating potential for a different coupling and curvature above 99% confidence level. This highlights the significance of broader cosmological data analyses and the possibility of better agreement between theory and observations by relaxing flatness and vacuum energy assumptions.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Jesus Torrado et al.
Summary: Cobaya is a general-purpose Bayesian analysis code designed for models with complex internal interdependencies. It efficiently exploits interdependencies between different stages of a model pipeline, automatically caches intermediate results, and optimally sorts parameters to minimize computational costs during sampling. The code allows exploration of posteriors using Monte Carlo samplers, functions for maximization and importance-reweighting of samples, and can be extended and parallelized with minimal overhead per posterior evaluation.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
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Astronomy & Astrophysics
Will Handley et al.
Summary: The study quantifies the tension between the Atacama Cosmology Telescope 2020 fourth data release (ACT) and Planck 2018 data within the concordance cosmological model using the Suspiciousness statistic to be 2.6 sigma. It also reveals tensions of 2.4 sigma between ACT and the South Pole Telescope (SPT), and 2.8 sigma between ACT and Planck + SPT combined. The causes of this tension, whether statistical fluctuations, systematic effects, or new physics, remain unclear, highlighting the need for caution when combining these cosmic microwave background datasets in the context of the ACDM standard model of the universe.
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Astronomy & Astrophysics
Weiqiang Yang et al.
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Astronomy & Astrophysics
Eleonora Di Valentino et al.
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