Cosmological constraints on neutrino plus axion hot dark matter

Abstract

We use observations of the cosmological large-scale structure to derive limits on two-component hot dark matter consisting of mass-degenerate neutrinos and hadronic axions, both components having velocity dispersions corresponding to their respective decoupling temperatures. We restrict the data samples to the safely linear regime, in particular excluding the Lyman-alpha forest. Using standard Bayesian inference techniques we derive credible regions in the two-parameter space of m_a and sum(m_nu). Marginalising over sum(m_nu) provides m_a < 1.2 eV (95% C.L.). In the absence of axions the same data and methods give sum(m_nu) < 0.65 eV (95% C.L.). We also derive limits on m_a for a range of axion-pion couplings up to one order of magnitude larger or smaller than the hadronic value.

arXiv comment13 pages, 2 figures, uses iopart.cls

References in corpus (35)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• Cosmological parameters from CMB and other data: a Monte-Carlo approach
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• The 2dF Galaxy Redshift Survey: Power-spectrum analysis of the final dataset and cosmological implications
• Stable clustering, the halo model and nonlinear cosmological power spectra
• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
• Massive neutrinos and cosmology
• Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Temperature Analysis
• Cosmological parameters from combining the Lyman-alpha forest with CMB, galaxy clustering and SN constraints
• The ratios of the light quark masses
• The Linear Theory Power Spectrum from the Lyman-alpha Forest in the Sloan Digital Sky Survey
• First results from the CERN Axion Solar Telescope (CAST)
• An improved limit on the axion-photon coupling from the CAST experiment
• The shape of the SDSS DR5 galaxy power spectrum
• Cosmological and astrophysical parameters from the SDSS flux power spectrum and hydrodynamical simulations of the Lyman-alpha forest
• Neutrino masses and the dark energy equation of state - relaxing the cosmological neutrino mass bound
• Hadronic axion window and the big-bang nucleosynthesis
• New cosmological mass limit on thermal relic axions
• On Axion Thermalization in the Early Universe
• The neutrino mass bound from WMAP-3, the baryon acoustic peak, the SNLS supernovae and the Lyman-alpha forest
• Observables sensitive to absolute neutrino masses: A reappraisal after WMAP-3y and first MINOS results
• Cosmology with High-redshift Galaxy Survey: Neutrino Mass and Inflation
• Axions - Motivation, limits and searches
• Cosmological mass limits on neutrinos, axions, and other light particles
• Primordial Neutrinos
• Dark Energy Tomography
• Measuring neutrino masses and dark energy with weak lensing tomography
• The Lyman-alpha forest and WMAP year three
• Cosmology of neutrinos and extra light particles after WMAP3
• Testing the accuracy of the Hydro-PM approximation in numerical simulations of the Lyman-alpha forest

Cited by in corpus (40)

• Axion Cosmology
• In the Realm of the Hubble tension $-$ a Review of Solutions
• The Low-Energy Frontier of Particle Physics
• Neutrino mass limit from tritium beta decay
• Probing eV-scale axions with CAST
• Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects
• Solar axion flux from the axion-electron coupling
• The Effect of Thermal Neutrino Motion on the Non-linear Cosmological Matter Power Spectrum
• Robust Neutrino Constraints by Combining Low Redshift Observations with the CMB
• Exploring Cosmic Origins with CORE: Cosmological Parameters
• Dark Matter Candidates - Axions, Neutralinos, Gravitinos, and Axinos
• Relic Neutrinos, thermal axions and cosmology in early 2014
• Neutrino and axion hot dark matter bounds after WMAP-7
• Constraints on dark matter particles from theory, galaxy observations and N-body simulations
• Axion hot dark matter bounds after Planck
• Cosmological bounds on sub-MeV mass axions
• Cosmological Bound on the QCD Axion Mass, Redux
• Axion constraints in non-standard thermal histories
• New solar axion search in CAST with ${}^4$He filling
• Cosmological constraints on neutrino plus axion hot dark matter: Update after WMAP-5
• New cosmological bounds on hot relics: Axions $\&$ Neutrinos
• Novel cosmological bounds on thermally-produced axion-like particles
• Future cosmological sensitivity for hot dark matter axions
• Chameleon Vector Bosons
• Dark Radiation and Inflationary Freedom after Planck 2015
• Nonlinear corrections to the cosmological matter power spectrum and scale-dependent galaxy bias: implications for parameter estimation
• Axion global fits with Peccei-Quinn symmetry breaking before inflation using GAMBIT
• Thermal axions with multi-eV masses are possible in low-reheating scenarios
• Tunneling across dilaton-axion black holes
• Cosmological forecasts on thermal axions, relic neutrinos and light elements
• A novel model-marginalized cosmological bound on the QCD axion mass
• The QCD Axion: Some Like It Hot
• Constraints on Unparticle Interactions from Particle and Antiparticle Oscillations
• Dark Radiation from the Primordial Thermal Bath in Momentum Space
• Lensing impact on cosmic relics and tensions
• Search for solar hadronic axions produced by a bremsstrahlung-like process
• Unparticle physics and lepton flavor violating radion decays in the Randall-Sundrum scenario
• $\Delta N_{\text{eff}}$ and entropy production from early-decaying gravitinos
• Restudy on Dark Matter Time-Evolution in the Littlest Higgs model with T-parity
• Robustness of cosmological axion mass limits