Limits on isocurvature fluctuations from Boomerang and MAXIMA

Abstract

We present the constraints on isocurvature fluctuations for a flat universe implied by the Boomerang and Maxima-1 data on the anisotropy of the cosmic microwave background. Because the new data defines the shape of the angular power spectrum in the region of the first acoustic peaks much more clearly than earlier data, even a tilted pure isocurvature model is now ruled out. However, a mixed model with a sizable isocurvature contribution remains allowed. We consider primordial fluctuations with different spectral indices for the adiabatic and isocurvature perturbations, and find that the 95% C.L. upper limit to the isocurvature contribution to the low multipoles is $\alpha \le 0.63$. The upper limit to the contribution in the $ł\sim 200$ region is ${\alpha }_{200}\le 0.13$.

6 pages, 6 figures, Minor changes to match the Phys.Rev.D version

References in corpus (6)

• A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation
• Primordial Nucleosynthesis: Theory and Observations
• Correlated adiabatic and isocurvature perturbations from double inflation
• The General Primordial Cosmic Perturbation
• New CMB constraints on the cosmic matter budget: trouble for nucleosynthesis?
• Constraining Isocurvature Fluctuations with the Planck Surveyor

Cited by in corpus (74)

• Planck 2018 results. X. Constraints on inflation
• Planck 2013 results. XXII. Constraints on inflation
• Adiabatic CMB perturbations in pre-big bang string cosmology
• Adiabatic and entropy perturbations from inflation
• CMB-S4 Science Case, Reference Design, and Project Plan
• Non-Gaussianity of the primordial perturbation in the curvaton model
• Cosmological implications of the MAXIMA-I high resolution Cosmic Microwave Background anisotropy measurement
• Cosmic Structure Formation with Topological Defects
• Cosmic Density Perturbations from Late-Decaying Scalar Condensations
• Observational constraints on the curvaton model of inflation
• Correlated perturbations from inflation and the cosmic microwave background
• Constraining Isocurvature Initial Conditions with WMAP 3-year data
• Constraining Isocurvature Perturbations with CMB Polarization
• Primordial black holes from sound speed resonance in the inflaton-curvaton mixed scenario
• Bounds on isocurvature perturbations from CMB and LSS data
• Isocurvature constraints on gravitationally produced superheavy dark matter
• Correlated Primordial Perturbations in Light of CMB and LSS Data
• Quintessence and Spontaneous Leptogenesis
• Magnetized CMB observables: a dedicated numerical approach
• Constraints on isocurvature models from the WMAP first-year data
• Cosmology with Mirror Dark Matter
• Correlated isocurvature perturbations from mixed inflaton-curvaton decay
• The initial conditions of the universe: how much isocurvature is allowed?
• Correlated adiabatic and isocurvature CMB fluctuations in the wake of the WMAP
• Bounds on CDM and neutrino isocurvature perturbations from CMB and LSS data
• Primordial non-Gaussianity from two curvaton decays
• Squeezing the window on isocurvature modes with the Lyman-alpha forest
• Compensated Isocurvature Perturbations and the Cosmic Microwave Background
• Tight coupling expansion and fully inhomogeneous magnetic fields
• Hints of Isocurvature Perturbations in the Cosmic Microwave Background?
• Entropy perturbations and large-scale magnetic fields
• Constraints on primordial isocurvature perturbations and spatial curvature by Bayesian model selection
• Adiabatic and isocurvature fluctuations of Affleck-Dine field in D-term inflation model
• Characterising the Primordial Cosmic Perturbations
• Baryons do trace dark matter 380,000 years after the big bang: Search for compensated isocurvature perturbations with WMAP 9-year data
• Gauge-Invariant Initial Conditions and Early Time Perturbations in Quintessence Universes
• Open and closed CDM isocurvature models contrasted with the CMB data
• Estimating relic magnetic fields from CMB temperature correlations
• Cold Dark Matter Isocurvature Perturbations: Constraints and Model Selection
• Model Independent Primordial Power Spectrum from Maxima, Boomerang, and DASI Data
• Parameter dependence of magnetized CMB observables
• Transfer matrices for magnetized CMB anisotropies
• Approximate Analytic Spectra of Reionized CMB Anisotropies and Polarization generated by Relic Gravitational Waves
• Power Spectra Based Planck Constraints on Compensated Isocurvature, and Forecasts for LiteBIRD and CORE Space Missions
• Generalized CMB initial conditions with pre-equality magnetic fields
• Constraints on scalar and tensor perturbations in phenomenological and two-field inflation models: Bayesian evidences for primordial isocurvature and tensor modes
• Two-field Kähler moduli inflation on large volume moduli stabilization
• Galactosynthesis: Halo Histories, Star Formation, and Disks
• Cosmological Parameters from the QUaD CMB polarization experiment
• Probing large-scale magnetism with the Cosmic Microwave Background
• Cold Dark Matter Isocurvature Perturbations: Cosmological Constraints and Applications
• Constraints on neutrino density and velocity isocurvature modes from WMAP-9 data
• Inhomogeneous Big Bang Nucleosynthesis and the High Baryon Density Suggested by Boomerang and MAXIMA
• The impact of relativistic corrections and component separation in the measurement of the SZ effect and on the small angular scale non-Gaussianity of the CMB
• Reproducing the observed Cosmic microwave background anisotropies with causal scaling seeds
• Constraints on moduli cosmology from the production of dark matter and baryon isocurvature fluctuations
• Light Axiodilatons: Matter Couplings, Weak-Scale Completions and Long-Distance Tests of Gravity
• Non-Gaussianity and constraints for the variance of perturbations in the curvaton model
• Glauber theory and the quantum coherence of curvature inhomogeneities
• Galaxy-QSO Correlation induced by Weak Gravitational Lensing arising from Large-Scale Structure
• Curvaton Decay into Baryons, anti-Baryons and Radiation
• Compressible hydromagnetic nonlinearities in the predecoupling plasma
• Primordial Isocurvature Perturbations: Testing the Adiabaticity of the CMB Anisotropy
• On Dark Energy Isocurvature Perturbation
• Primordial black holes from the ultraslow-roll phase in the inflaton--curvaton mixed field inflation
• Spectator Higgs, large-scale gauge fields and the non-minimal coupling to gravity
• Non-linear curvature inhomogeneities and backreaction for relativistic viscous fluids
• Quasiadiabatic modes from viscous inhomogeneities
• CMB lensing forecasts for constraining the primordial perturbations: adding to the CMB temperature and polarization information
• Magnetization of fluid phonons and large-scale curvature perturbations
• Viscous modes, isocurvature perturbations and CMB initial conditions
• Forecasting isocurvature models with CMB lensing information: axion and curvaton scenarios
• Searching for dark matter isocurvature initial conditions with N-body Simulations
• Probing small-scale baryon and dark matter isocurvature perturbations with cosmic microwave background anisotropies