The High-Z Supernova Search: Measuring Cosmic Deceleration and Global Cur vature of the Universe Using Type Ia Supernovae

Abstract

The High-Z Supernova Search is an international collaboration to discover and monitor type Ia supernovae (SN Ia) at $z>0.2$ with the aim of measuring cosmic deceleration and global curvature. Our collaboration has pursued a basic understanding of supernovae in the nearby Universe, discovering and observing a large sample of objects, and developing methods to measure accurate distances with SN Ia. This paper describes the extension of this program to $z\ge 0.2$, outlining our search techniques and follow-up program. We have devised high-throughput filters which provide accurate two-color restframe $B$ and $V$ light curves of SN Ia, enabling us to produce precise, extinction-corrected luminosity distances in the range $0.25<z<0.55$. Sources of systematic error from K-corrections, extinction, selection effects, and evolution are investigated, and their effects estimated. We present photometric and spectral observations of SN 1995K, our program's first supernova, and use the data to obtain a precise measurement of the luminosity distance to the $z=0.479$ host galaxy. This object, when combined with a nearby sample of SN, yields an estimate for the matter density of the Universe of ${\Omega }_M=-0.2_{-0.8}^{+1.0}$ if ${\Omega }_{\Lambda }=0$. For a spatially flat universe composed of normal matter and a cosmological constant, we find ${\Omega }_M=0.4_{-0.4}^{+0.5}$, ${\Omega }_{\Lambda }=0.6_{-0.5}^{+0.4}$. We demonstrate that with a sample of $\sim 30$ objects, we should be able to determine relative luminosity distances over the range $0<z<0.5$ with sufficient precision to measure ${\Omega }_M$ with an uncertainty of $\pm 0.2$.

51 pages, 14 figures, To Appear in the Astrophysical Journal

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• Prediction of Supernova Rates in Known Galaxy-galaxy Strong-lens Systems
• Quantifying systematic uncertainties in supernova cosmology
• Studying Type II supernovae as cosmological standard candles using the Dark Energy Survey
• A New View of the Cosmic Landscape
• Dissipative Liouville Cosmology: A Case Study
• The SkyMapper Transient Survey
• Disentangling dark sector models using weak lensing statistics
• Collision-induced galaxy formation: semi-analytical model and multi-wavelength predictions
• The statistics of wide-separation lensed quasars
• Genesis of Dark Energy: Dark Energy as Consequence of Release and Two-stage Tracking Cosmological Nuclear Energy
• The High-z Quasar Hubble Diagram
• GRB 010921: Strong Limits on an Underlying Supernova from HST
• Remapping dark matter halo catalogues between cosmological simulations
• Basics of inflationary cosmology
• Noether symmetric classical and quantum scalar field cosmology
• A Planck-scale axion and SU(2) Yang-Mills dynamics: Present acceleration and the fate of the photon
• Curvature Singularities from Gravitational Contraction in f(R) Gravity
• Evaluation of cosmological models in $f(R,T)$ gravity in different dark energy scenario
• 5.9 keV Mn K-shell X-ray luminosity from the decay of 55Fe in Type Ia supernova models
• Supernovae and Cosmology
• Cosmological Tests Using the Angular Size of Galaxy Clusters
• Statistical Understanding of Quark and Lepton Masses in Gaussian Landscapes
• Impact of a locally measured H_0 on the interpretation of cosmic chronometer data
• L.R.S. Bianchi type II Stiff Fluid cosmological model with Decaying Vacuum Energy Density $\Lambda$ in general relativity
• Brany Liouville Inflation
• Neutrinos from type Ia supernovae: the deflagration-to-detonation transition scenario
• How SN Ia host-galaxy properties affect cosmological parameters
• Helium ignition in rotating magnetized CO white dwarfs leading to fast and faint rather than classical type Ia supernovae
• A comparison of the galaxy peculiar velocity field with the PSCz gravity field-- A Bayesian hyper-parameter method
• Photon Spectrum Produced by the Late Decay of a Cosmic Neutrino Background
• Methods for studying the accuracy of light propagation in N-body simulations
• Observational Constraints with Recent Data on the DGP Modified Gravity
• Observational evidence for a correlation between peak-luminosities and beaming in GRBs
• Power-law Parameterized Quintessence Model
• Vector and Tensor Contributions to the Luminosity Distance
• Reaffirming the Cosmic Acceleration without Supernova and CMB
• Full Investigation on the Dynamics of Power-Law Kinetic Quintessence
• Brane universes tested against astronomical data
• Brane universes tested by supernovae
• A magnified glance into the dark sector: probing cosmological models with strong lensing in A1689
• Weak lensing predictions for coupled dark energy cosmologies at non-linear scales
• Further evidence for significant luminosity evolution in supernova cosmology
• Analytic study on backreacting holographic superconductors with dark matter sector
• Characterizing dark interactions with the halo mass accretion history and structural properties
• Analysis of galaxy kinematics based on Cepheids from the Gaia DR2 Catalogue
• Bianchi Type-II String Cosmological Models in Normal Gauge for Lyra's Manifold with Constant Deceleration Parameter
• Interacting Two-Fluid Viscous Dark Energy Models In Non-Flat Universe
• A cosmographic analysis of the transition to acceleration using SN-Ia and BAO
• The Lame${}^{\prime }$ Equation for Distance-Redshift in Partially Filled Beam Friedmann-Lema\^ıtre-Robertson-Walker Cosmology
• Structure formation in Multiple Dark Matter cosmologies with long-range scalar interactions
• Testing Lambda CDM cosmology at turnaround: where to look for violations of the bound?
• Neutrinos from type Ia supernovae: The gravitationally confined detonation scenario
• Supernova Magnitude Evolution and PAge Approximation
• Dark energy interacting with neutrinos and dark matter: a phenomenological theory
• Limits on the Detectability of Cosmic Topology in Hyperbolic Universes
• Model-Independent Reconstruction of the Expansion History of the Universe from Type Ia Supernovae
• Next generation design and prospects for CANNEX
• A cosmological model in Weyl-Cartan spacetime: II. Magnitude-redshift relation
• The cosmic gamma-ray background in the MeV range
• The Evolution of Helium Star Plus Carbon-Oxygen White Dwarf Binary Systems and Implications for Diverse Stellar Transients and Hypervelocity Stars
• Testing non-standard cosmological models with supernovae
• Monopoles, Axions and Intermediate Mass Dark Matter
• Extracting clean supernova spectra
• Stable accelerating universe with no hair
• Dynamical features of an anisotropic cosmological model
• Cosmological model with macroscopic spin fluid
• Dynamical Stability of Six-dimensional Warped Flux Compactification
• Extensive search for bias in SNIa data
• Deep Attention-Based Supernovae Classification of Multi-Band Light-Curves
• Was SN1997ff at z~1.7 magnified by gravitational lensing?
• Simulating cosmologies beyond $\Lambda$CDM with PINOCCHIO
• Investigating the accelerated expansion of the Universe through updated constraints on viable $f(R)$ models within the metric formalism
• Compatibility between the scalar field models of tachyon, $k$-essence and quintessence in $f(R,T)$ gravity
• Clustering and redshift-space distortions in modified gravity models with massive neutrinos
• CMB Constraints on a Baryonic Dark Matter-Dominated Universe
• Perturbations in a scalar field model with virtues of $\Lambda$CDM
• Coupled Multi-Proca Vector Dark Energy
• The NN2 Flux Difference Method for Constructing Variable Object Light Curves
• Archimedean-type force in a cosmic dark fluid: III. Big Rip, Little Rip and Cyclic solutions
• Supernovae with "Super-Hipparcos"
• Constraints on field flows of quintessence dark energy
• Determining the Geometry and the Cosmological Parameters of the Universe through SZE Cluster Counts
• Study of Supernovae Important for Cosmology
• Constraining the Dark Universe
• Complementary constraints from FR IIb radio galaxies and X-ray gas mass fractions in clusters on non-standard cosmological models
• A Luminous Peculiar Type Ia Supernova SN 2011hr: More Like SN 1991T or SN 2007if?
• Dark Energy: The Shadowy Reflection of Dark Matter?
• The galaxy luminosity function and the Local Hole
• Testing f(R) gravity models with quasar X-ray and UV fluxes
• Dynamical Systems Analysis of K-essence Model
• Cosmography and large scale structure by f(R) gravity: new results
• Anisotropic solid dark energy
• Dark sector impact on gravitational collapse of an electrically charged scalar field
• Universe With Time Dependent Deceleration Parameter and $\Lambda$ Term in General Relativity
• The extended ROSAT-ESO Flux-Limited X-ray Galaxy Cluster Survey (REFLEX II) V. Exploring a local underdensity in the Southern Sky
• Testing Cosmological Models with Type Ic Super Luminous Supernovae
• Predicting emission line fluxes and number counts of distant galaxies for cosmological surveys
• Manganese spread in Ursa Minor as a proof of sub-classes of type Ia supernovae
• Wave propagation and shock formation in the most general scalar-tensor theories
• Non-singular Brans-Dicke cosmology with cosmological constant
• Constraining the Source of the High-velocity Ejecta in Type Ia SN 2019ein
• Optical Light Curves of Supernovae
• Particle-Like Description in Quintessential Cosmology
• Generation of Bianchi type V cosmological models with varying $\Lambda$-term
• Kick it like DESI: PNGB quintessence with a dynamically generated initial velocity
• Possible Signatures of Inflationary Particle Content: Spin-2 Fields
• Cosmology calculations almost without general relativity
• Cosmological models in scalar tensor theories of gravity and observations: a class of general solutions
• Brans-Dicke Theory and Thermodynamical Laws on Apparent and Event Horizons
• Neutrinos from Type Ia and failed core-collapse supernovae at dark matter detectors
• Young Remnants of Type Ia Supernovae and Their Progenitors: A Study of SNR G1.9+0.3
• Non-Gaussian Scatter in Cluster Scaling Relations
• The host galaxies of type Ia supernovae at z=0.6
• Gamma-Rays as Probes for the Multi-Dimensionality of Type Ia Supernovae
• The birth rate of supernovae from double-degenerate and core-degenerate systems
• Exploring the borderline between stable mass transfer and mergers in close binary evolution
• The Cosmological Constant Problem and Inflation in the String Landscape
• Dark energy and supermassive black holes
• Plane-symmetric inhomogeneous magnetized viscous fluid universe with a variable $\Lambda$
• Cosmological acceleration
• Tomography from the Next Generation of Cosmic Shear Experiments for Viable f(R) Models
• A longitudinal gauge degree of freedom and the Pais Uhlenbeck field
• Magnetic field in holographic superconductor with dark matter sector
• A search for previously unrecognised metal-poor subdwarfs in the Hipparcos astrometric catalogue
• Acceleration of the Universe
• Some Homogeneous Bianchi Type IX Viscous Fluid Cosmological Models with a varying $\Lambda$
• Distance-redshift relation in plane symmetric universes
• Anti-D-brane as Dark Matter in Warped String Compactification
• Anisotropic $k$-essence
• Observational Constraints on a Variable Dark Energy Model
• Some Dynamical Effects of the Cosmological Constant
• The optical geometry definition of the total deflection angle of a light ray in curved spacetime
• Imaging and Demography of the Host Galaxies of High-Redshift Type Ia Supernovae
• Redshift Evolution and Non-Universal Dispersion of Quasar Luminosity Correlation
• Linear Perturbation constraints on Multi-coupled Dark Energy
• Einstein's Biggest Blunder? High-Redshift Supernovae and the Accelerating Universe
• Massive cosmic strings in Bianchi type II
• Cosmological Black Holes as Seeds of Voids in Galaxy Distribution
• Theoretical Clues to the Ultraviolet Diversity of Type Ia Supernovae
• The X-ray/radio and UV luminosity expected from symbiotic systems as the progenitor of SNe Ia
• Raytracing simulations of coupled dark energy models
• Implications of the WMAP Age Measurement for Stellar Evolution and Dark Energy
• Dark Energy and the Hubble Age
• Breaking cosmic degeneracies: Disentangling neutrinos and modified gravity with kinematic information
• Transverse Wave Propagation in Relativistic Two-fluid Plasmas around Schwarzschild-de Sitter Black Hole
• Unified $f(R)$ gravity at local scales
• Evidence for strong progenitor age dependence of type Ia supernova luminosity standardization process
• Constraining the Cosmological Constant from Large-Scale Redshift-Space Clustering
• Some Inhomogeneous Magnetized Viscous Fluid Cosmological Models with Varying $\Lambda$
• Detectability of Cosmic Topology in Flat Universes
• Differentiating dark interactions with perturbation
• On the Reality of the Accelerating Universe
• Kaluza-Klein Type Robertson Walker Cosmological Model With Dynamical Cosmological Term $\Lambda$
• Dynamical System Approach to Cosmological Models with a Varying Speed of Light
• Spectroscopic Determination of the Low Redshift Type Ia Supernova Rate from the Sloan Digital Sky Survey
• Deformed special relativity with an invariant minimum speed and its cosmological implications
• Bianchi II with time varying constants. Self-similar approach
• Eternally accelerating universe without event horizon
• An explanation for the tiny value of the cosmological constant and the low vacuum energy density
• Properties of cosmologies with dynamical pseudo Nambu-Goldstone bosons
• The D-material universe
• Thermodynamical Behaviour of Inhomogeneous Universe with Varying $\Lambda$ in Presence of Electromagnetic Field
• Linking Extragalactic Transients and their Host Galaxy Properties: Transient Sample, Multi-Wavelength Host Identification, and Database Construction
• No Surviving SN Ia Companion In SNR 0509-67.5: Stellar Population Characterization and Comparison To Models
• The lepton asymmetry: the last chance for a critical-density cosmology?
• Gamma-ray burst cosmology: Hubble diagram and star formation history
• Curvature Dependence of Peaks in the Cosmic Microwave Background Distribution
• Early-type Host Galaxies of Type Ia Supernovae. I. Evidence for Downsizing
• Observational tests of a two parameter power-law class modified gravity in Palatini formalism
• Rest-Frame R-band Lightcurve of a z~1.3 Supernova Obtained with Keck Laser Adaptive Optics
• Testing the tensor-vector-scalar Theory with the latest cosmological observations
• Superhorizon perturbations: A possible explanation of the Hubble--Lemaître Tension and the Large Scale Anisotropy of the Universe
• Precision measurements of large scale structure with future type Ia supernova surveys
• Is Thick Brane Model Consistent with the Recent Observations?
• The BICEP2 data and a single Higgs-like interacting tachyonic field
• Quintessence as k-essence
• Nonminimal Einstein-Maxwell-Vlasov-axion model
• The Age-Redshift Relationship of Old Passive Galaxies
• The cosmological evolution of colour gradients in spheroids
• Dark Energy Models and Laws of Thermodynamics in Bianchi I Model
• Testing dark matter with high-redshift supernovae
• Electrodynamics of a Cosmic Dark Fluid
• A varying-c cosmology
• Inhomogeneous Bulk Viscous Fluid Universe with Electromagnetic Field and Variable $\Lambda$-Term
• Robustness of the Quintessence Scenario in Particle Cosmologies
• Supernovae and Gaia
• Recovering $\Lambda$CDM Model From a Cosmographic Study
• Density perturbation in an interacting holographic dark energy model
• Sub-Quantum Dark Energy
• A Two-point Diagnostic for the HII Galaxy Hubble Diagram
• Particle Production in f(R) Gravity during Structure Formation
• Apparent magnitudes in an inhomogeneous universe: the global viewpoint
• Observational Evidence for Negative-Energy Dust in Late-Times Cosmology
• Search for environment-dependent dilatons
• Probing violation of the Copernican principle via the integrated Sachs-Wolfe effect
• Cosmic Type Ia SN rate and constraints on SN Ia progenitors
• Correcting for peculiar velocities of Type Ia Supernovae in clusters of galaxies
• Signatures of a surviving helium-star companion in Type Ia supernovae and constraints on the progenitor companion of SN 2011fe
• Reconciling the cosmic age problem in the R_h=ct Universe
• Is there a standard measuring rod in the Universe?
• Electromagnetic waves in an axion-active relativistic plasma non-minimally coupled to gravity
• Dark Energy Nature in Logarithmic $f(R,T)$ Cosmology
• Higher Dimensional Dust Cosmological Implications of a Decay Law for $\Lambda$ Term : Expressions for Some Observable Quantities
• The ESO's VLT Type Ia supernova spectral set of the final two years of SNLS
• Nonlinear spherical perturbations in Quintessence Models of Dark Energy
• Forecasting cosmic acceleration measurements using the Lyman-$\alpha$ forest
• The Age-Redshift Relation for Standard Cosmology
• A model for CMB anisotropies on large angular scales
• Interaction between scalar field and ideal fluid with inhomogeneous equation of state
• Dynamical age of the universe as a constraint on the parametrization of dark energy equation of state
• Dipole anisotropies of IRAS galaxies and the contribution of a large-scale local void
• Mass Generation for an Ultralight Axion
• Accelerating Universe and Dynamical Compactification of Extra Dimensions
• Cosmological Tests with the Joint Lightcurve Analysis
• Supernova, baryon acoustic oscillations, and CMB surface distance constraints on f(G) higher order gravity models
• Conformally and Disformally Coupled Vector field Models of Dark Energy
• Evolution of Main-Sequence-like Surviving Companions in Type Ia Supernova Remnants
• Exploring the Cosmological Model in $f(R,T^{\varphi })$ Gravity with Observational Constraints
• Volume Expansion of Swiss-Cheese Universe
• Thawing and Freezing Quintessence Models: A thermodynamic Consideration
• Evolution of shifted cosmological parameter and shifted dust matter in a two-phase tachyonic field universe
• Inclusive Constraints on Unified Dark Matter Models from Future Large-Scale Surveys
• Thermonuclear Burning Regimes and the Use of SNe Ia in Cosmology
• Observational constraints on the braneworld model with brane-bulk energy exchange
• Constraining the Progenitor of the Type Ia Supernova SN 2012cg
• Gravitational lensing by elliptical galaxies
• Renyi Holographic Dark Energy models in Teleparallel gravity
• Ultra-high energy cosmic rays, cosmological constant, and $\theta$-vacua
• Gravitational Origin of Phantom Dark Energy and Late Cosmic Acceleration
• The kinematic Sunyaev-Zel'dovich effect of the large-scale structure (II): the effect of modified gravity
• Cosmological constant influence on cosmic string spacetime
• Search for dark energy with neutron interferometry
• Cosmology with a long range repulsive force
• Halting eternal acceleration with an effective negative cosmological constant
• Statistics of gravitational lenses in the clumpy Universe
• Bianchi VI_0&III models. Self-similar approach
• The Farthest Known Supernova: Support for an Accelerating Universe and a Glimpse of the Epoch of Deceleration
• Phenomemology of a Realistic Accelerating Universe Using Tracker Fields
• Flattened Galactic Haloes and Baryonic Dark Matter
• X-ray Clusters of Galaxies as Cosmological Tools
• Type Ia Supernova Distance Modulus Bias and Dispersion From K-correction Errors: A Direct Measurement Using Lightcurve Fits to Observed Spectral Time Series
• Dark energy fingerprints in the nonminimal Wu-Yang wormhole structure
• Particle Creation in Pre-Big-Bang Cosmology: theory and observational consequences
• Constraints on the Space Density of Methane Dwarfs and the Substellar Mass Function from a Deep Near-Infrared Survey
• Applications to cosmological models of a complex scalar field coupled to a U(1) vector gauge field
• Can MOND type hypotheses be tested in a free fall laboratory environment?
• Testing Modified Gravity theory (MOG) with Type Ia Supernovae, Cosmic Chronometers and Baryon Acoustic Oscillations
• Evidence for Evolution or Bias in Host Extinctions of Type 1a Supernovae at High Redshift
• Discriminating among cosmological models by data-driven methods
• Cosmological Constant, Gauge Hierarchy and Warped Geometry
• Constraining dust and color variations of high-z SNe using NICMOS on Hubble Space Telescope
• Model Selection with Baryonic Acoustic Oscillations in the Lyman-alpha Forest
• Cyclic Universe with an Inflationary Phase from a Cosmological Model with Real Gas Quintessence
• Utilizing the Updated Gamma-Ray Bursts and Type Ia Supernovae to Constrain the Cardassian Expansion Model and Dark Energy
• Gravity in the dynamical approach to the cosmological constant
• Entanglement Entropy in the $\sigma$-Model with the de Sitter Target Space
• A Measurement of the Cosmic Expansion Within our Lifetime
• A 5D non compact and non Ricci flat Kaluza-Klein Cosmology
• Viscous Dark Energy and Phantom Field in An Anisotropic Universe
• Transverse Wave Propagation in Relativistic Two-fluid Plasmas in de Sitter Space
• Upper Limit on Dimming of Cosmological Sources by Intergalactic Grey Dust from the Soft X-ray Background
• The Science Case for PILOT II: the Distant Universe
• Constraints on the Spacetime Dynamics of an Early Dark Energy Component
• Supernova and Cosmology
• On the problem of equation of state for the $\Lambda$ - field
• Qualitative analysis and characterization of two cosmologies including scalar fields
• Search for Global Metric Anisotropy in Type Ia Supernova Data
• LRS Bianchi I model with constant deceleration parameter
• Physical vacuum as a system manifesting itself on various scales - from nuclear physics to cosmology
• Dark Energy from Casimir Energy on Noncommutative Extra Dimensions
• SN 2019ein: A Type Ia Supernova Likely Originated from a Sub-Chandrasekhar-Mass Explosion
• Lower Limit to the Scale of an Effective Theory of Gravitation
• Origin of the Chemical Elements
• Perspectives in Fundamental Physics in Space
• Spacetime and vacuum as seen from Moscow
• A matter-dominated cosmological model with variable $G$ and $\Lambda$. Confrontation of theoretical predictions with observational data
• Luminous Matter Distribution, Bulk Flows and Baryon Contents in Cosmological Models with a Local Void
• Energy conditions for Inhomogeneous EOS and its Thermodynamics analysis with the resolution on finite time future singularity problems
• Type Ia supernova ejecta-donor interaction: explosion model comparison
• Graviton mass due to dark energy as a superconducting medium: theoretical and phenomenological aspects
• Higher Dimensional Cosmological Implications Of A Decay Law For $\Lambda$ Term : Expressions For Some Observable Quantities
• Transit cosmological models coupled with zero-mass scalar-field with high redshift in higher derivative theory
• A Parameterized Variable Dark Energy Model: Structure Formation and Observational Constraints
• The issue of Dark Energy in String Theory
• Holographic networks for (1+1)-dimensional de Sitter spacetime
• On the electrodynamics of moving particles in a quasi flat spacetime with Lorentz violation and its cosmological implications
• General Relativistic Aberration Equation and Measurable Angle of Light Ray in Kerr--de Sitter Spacetime
• Gauge-invariant treatment of the integrated Sachs-Wolfe effect on general spherically symmetric spacetimes
• Self-shielding effect of a single phase liquid xenon detector for direct dark matter search
• Unveiling the Universe with Emerging Cosmological Probes
• Vacuum selection by inflation as the origin of the dark energy
• A minimal set of invariants as a systematic approach to higher order gravity models: Physical and Cosmological Constraints
• Long-term evolution of post-explosion Helium-star Companions of Type Iax Supernovae
• Thawing k-essence dark energy in the PAge space
• Unbiased constraints on the clumpiness of universe from standard candles
• Dynamics of Massive Scalar Fields in dS Space and the dS/CFT Correspondence
• Type Ia supernovae with and without blueshifted narrow Na I D lines - how different is their structure?
• Tachyonic vs Quintessence dark energy: linear perturbations and CMB data
• Early dark energy constraints on growing neutrino quintessence cosmologies
• Conformal scattering of the Maxwell-scalar field system on de Sitter space
• Hubble flow variations as a test for inhomogeneous cosmology
• Cosmological perturbations in the $\Lambda$CDM-like limit of a polytropic dark matter model
• Do recent supernovae Ia observations tend to rule out all the cosmologies?
• Consistent use of Type Ia supernovae highly magnified by galaxy clusters to constrain the cosmological parameters
• Accelerating expansion of the universe may be caused by inhomogeneities
• Supercriticality of a Class of Critical String Cosmological Solutions
• On the Brightness of Surviving Companions in Type Ia Supernova Remnants
• Study of Thermodynamics in Generalized Holographic and Ricci Dark Energy Models
• Curvature Singularity in f(R) Theories of Gravity
• The Shared Causal Pasts and Futures of Cosmological Events
• A proposal to improve the accuracy of cosmological observables and address the Hubble tension problem
• A brief review of a modified relativity that explains cosmological constant
• Neutrinos and the Phenomenology of CPT Violation
• Electromagnetic signatures of white dwarf collisions in AGN discs
• An Alternative Interpretation for the Moduli Fields of the Cosmology Associated to Type IIB Supergravity with Fluxes
• Endowing $\mathbf{\Lambda }$ with a dynamic nature: constraints in a spatially curved Universe
• Baryon acoustic oscillations with the cross-correlation of spectroscopic and photometric samples
• Inflation with a constant ratio of scalar and tensor perturbation amplitudes
• Century of $\Lambda$
• Reconstructing the parameter space of non-analytical cosmological fixed points
• HOLISMOKES -- XII. Time-delay Measurements of Strongly Lensed Type Ia Supernovae using a Long Short-Term Memory Network
• Reduced convergence and the local smoothness parameter: bridging two different descriptions of weak lensing amplification
• Detection of Iron Emission in the z = 5.74 QSO SDSSp J104433.04-012502.2
• The Effects of Relativistic Corrections on Cosmological Parameter Estimations from SZE Cluster Surveys
• Modern Cosmology: Interactive Computer Simulations that use Recent Observational Surveys
• Traversable wormholes in bi-metric gravity
• Cosmology at Low Redshifts
• Covariant Quantization of the Partially Massless Graviton Field in de Sitter Spacetime
• Binary population synthesis for the core-degenerate scenario of type Ia supernova progenitors
• "Massive" Rarita-Schwinger field in de Sitter space
• Cosmic Evolution with Early and Late Acceleration Inspired by Dual Nature of the Ricci Scalar Curvature
• Some effects of different coordinate systems in cosmology
• A Silent Revolution in Fundamental Astrophysics
• Testing Lambert$W$ equation of state with observational Hubble parameter data
• The Lambert $W$ function: A newcomer in the Cosmology class?
• Thermodynamic analysis for Non-linear system (Van-der-Waals EOS) with viscous cosmology
• A Scaling Relation in Inhomogeneous Cosmology with k-essence scalar fields
• Cavitation model of the initial stage of Big Bang
• Solitons in the Einstein universe
• Measuring the velocity field from type Ia supernovae in an LSST-like sky survey
• A Solution to the Cosmological Constant Problem
• Determining the Equation of State of the Expanding Universe Using a New Independent Variable
• Viability of Arctan Model of f(R) Gravity for Late-time Cosmology
• Cosmological Evolution in Bimetric Gravity: Observational Constraints and LSS Signatures
• Voids in the Cosmic Web as a probe of dark energy
• A Forecast for Large Scale Structure Constraints on Horndeski Gravity with Line Intensity Mapping
• Role of a periodic varying deceleration parameter in Particle creation with higher dimensional FLRW Universe
• Five-Dimrnsional Cosmological Theory of Unified Space, Time and Velocity
• De Sitter Vacua from a D-term Generated Racetrack Uplift
• Distance measurements as a probe of cosmic acceleration
• Dynamics of $f(R)$ gravity models and asymmetry of time
• Phase structure of the $O(2)$ ghost model with higher-order gradient term
• Real Scalar Field Scattering with Polynomial Approximation around Schwarzschild-de Sitter Black-hole
• Thawing vs. Tracker Solutions: A Dynamical Systems Approach
• Small cosmological constant in seesaw mechanism with breaking down SUSY
• Observational constraints on a Yang-Mills condensate dark energy model
• Analog de Sitter space in a controlled Coulomb explosion
• Testing non-local gravity through Ultra-Diffuse Galaxies kinematics
• Scaling attractors for quintessence in flat universe with cosmological term
• LRS Bianchi I model with perfect fluid equation of state
• Evolving Maximally Symmetric Spacetime Bubbles from Spontaneous Z_2-Violation at Electroweak Symmetry Breaking Scale
• Transients from initial conditions based on Lagrangian perturbation theory in $N$-body simulations II: the effect of the transverse mode
• Vacuum energy, the Casimir effect, and Newton's non-constant
• A new global 1-form in Lyra geometric cosmos model
• Indirect detection of Cosmological Constant from interacting open quantum system
• Scalar fields in an anisotropic closed universe
• The Standard Model, Dark Matter, and Dark Energy: From the Sublime to the Ridiculous
• Thermodynamics and energy condition analysis for Van-Der-Waals EOS without viscous cosmology
• Unification of Gravitation, Gauge Field and Dark Energy
• Can MONDian vector theories explain the cosmic speed up ?
• Candidates for non-baryonic dark matter
• The expansion of the universe observed with supernovae
• Von Neumann's Quantization of General Relativity
• A theoretically-explained new-variant of Modified-Newtonian-Dynamics (MOND)
• An Exploration of Heterogeneity in Supernova Type Ia Samples
• On the rotation properties of a post-explosion helium-star companion in Type Iax supernovae
• Dark energy model with very large-scale inhomogeneity
• Gravitational Bounce from the Quantum Exclusion Principle
• The Dynamics of Brane-World Cosmological Models
• Anisotropic cosmology using observational datasets: exploring via machine learning approaches
• Photometric properties of intermediate redshift Type Ia Supernovae observed by SDSS-II Supernova Survey
• Einstein Manifolds, Abelian Instantons, Bundle Reduction, and the Cosmological Constant
• Mimicking the $\Lambda$CDM Universe through inhomogeneous space-time
• KiDS-Legacy: Constraining dark energy, neutrino mass, and curvature
• Observational tests of the conformal osculating Barthel-Kropina cosmological model
• Simple Model of Propagating Flame Pulsations
• Type Ia Supernovae from First-generation Stars
• Asymptotically Non-Static Kerr-deSitter Spacetime With No Event Horizon
• Linear and nonlinear clusterings of Horndeski-inspired dark energy models with fast transition
• Multiple fluid theory of cosmic evolution and its thermodynamic analysis
• Concatenation of Scales Below 1 eV
• Dark Energy Density in Brane World
• The Self-Calibrating Hubble Diagram
• Constraining Violations of the Weak Equivalence Principle in the Dark Sector
• Density perturbation in the models reconstructed from jerk parameter
• Interacting Models of Generalised Chaplygin Gas and Modified Chaplygin Gas with Barotropic Fluid
• Reply to "On scaling solutions with a dissipative fluid"
• The Effect of the Pre-Detonation Stellar Internal Velocity Profile on the Nucleosynthetic Yields in Type Ia Supernova
• Gas of thin tubes of massless scalar field as a possible model of unified dark fluid
• Is the cosmological dark sector better modeled by a generalized Chaplygin gas or by a scalar field?
• Tachyonic fields in cosmology
• Supersymmetric dS4 solutions in D=11 supergravity
• Determination of cosmology and evolution from K-band magnitude-redshift and number count observations
• Cold Collapse and Bounce of an FLRW Cloud
• Unruh effect as foundation of universal gravitation within the cosmological scenario
• Foundations of a Theory of Gravity with a Constraint and its Canonical Quantization
• Cosmological constraints from supernova data set with corrected redshift
• Cosmology with Type II Supernovae
• Mixed gauge-gravity term and proper time
• A neutrino model fit to the CMB power spectrum
• Anchors no more: Using peculiar velocities to constrain $H_0$ and the primordial Universe without calibrators
• Quasiparticle Cosmology
• Ho from Type Ia Supernovae
• The asymmetry of white dwarf double detonations and the observed scatter around the Phillips relation
• Constraints on the Cosmological Constant in a Static Geometry from Periodicity in a Compact Fifth-Dimension
• Observational signatures of the surviving donor star in the double detonation model of Type Ia supernovae
• Dark Energy Simulations
• Some Classes of Interacting Two-Fluid Model of the Expanding Universe
• String Cosmology in LRS Bianchi Type-II Dusty Universe with Time Decaying Vacuum Energy Density $\Lambda$
• Accelerating Flat Universe and Analytic Study of the m-z Relation
• A scaling relation in [C II]-detected galaxies and its likely application in cosmology
• Conformally flat models in Penrose's Conformal Cyclic Cosmology
• Quantum Fluctuations of the Gravitational Field and Propagation of Light: a Heuristic Approach
• The String Coupling Accelerates the Expansion of the Universe
• Perturbations In Some Dark Energy Models
• Cosmic Magnetic Fields
• Probing dark energy with braneworld cosmology in the light of recent cosmological data
• Background gravitational waves as signature of the adiabatic expansion of a black body that represents the dark universe
• Scale Dependence of Dark Energy Antigravity
• Black holes in the varying speed of light theory
• Type Iax supernovae from deflagrations in Chandrasekhar mass white dwarfs
• Notes on the compatibility of type Ia supernovae data and varying--$G$ cosmology
• Three-Dimensional Simulations of Type Ia Supernova Remnants I: Effects of a Main-Sequence Companion Star
• Cosmological consequences of an inhomogeneous space-time
• Deep MUSE observations of SNR 0509-67.5 reveal a double degenerate merger progenitor
• Brane cosmology with variable tension
• Does the cosmological constant stay hidden?
• Exploring the constraints on cosmological models with CosmoEJS
• Inflationary phase and role of dark energy: Revisited
• Archeops, mapping the CMB sky from large to small angular scales
• Intermediate redshift calibration of Gamma-ray Bursts and cosmic constraints in non-flat cosmology
• Counting the negative eigenvalues of the thermalon in three dimensions
• Euclid: Optimising tomographic redshift binning for 3$\times$2pt power spectrum constraints on dark energy
• Serial Acceleration-Deceleration Transitions in a Cyclic Universe with Negative Curvature
• Accretion of Generalized Chaplygin Gas onto Cosmologically Coupled Black Holes
• Topological quantum correction to an atomic ideal gas law as a dark energy effect
• Cosmology of a polynomial model for de Sitter gauge theory sourced by a fluid
• Spherical collapse in reconstructed dark energy models
• A Topological Extension of General Relativity to Explore the Nature of Quantum Space-time, Dark Energy and Inflation
• Cosmological Model with a Local Void: New Supernova Constraints
• Late time cosmological solutions in $f(R,T)$ gravity in a viscous Universe
• Differences between scalar field and scalar density solutions
• Yellow Post-Asymptotic-Giant-Branch Stars as Standard Candles. I. Calibration of the Luminosity Function in Galactic Globular Clusters