Secondary CMB anisotropies from the kinetic SZ effect

Abstract

We present an analytic model, based on previous works which tackled the reionization history of the universe, which allows us to describe the generation of the secondary CMB anisotropies due to the kinetic SZ effect. We take into account the "patchy pattern" of reionization (HII bubbles), the cross-correlations of these ionized regions, the small-scale fluctuations of the matter density field and the contribution from collapsed objects. For an open universe, we find that the power-spectrum $l(l+1)C_l/(2\pi )$ exhibits a plateau of height $10^{-13}$ in the range $10^3<l<10^6$. We find that for large wavenumbers $l>10^4$ the signal is dominated by the contribution from collapsed halos while for $l<10^4$ it is governed by the large-scale correlations of HII bubbles. This implies that one cannot discriminate reionization by stars from a quasar-driven scenario since the size of ionized regions never dominates the behaviour of the anisotropies. Moreover, the secondary CMB anisotropies arise from a broad range of redshifts (7.5<z<10 for the IGM and 0<z<7 for galactic halos). The signal expected in our model might bias the cosmological parameter estimation from CMB experiments such as Planck and could be detected by future mm-wavelength interferometers (e.g., ALMA).

17 pages, final version published in A&A

References in corpus (4)

• Cosmological Reionization by Stellar Sources
• Zero-Metallicity Stars and the Effects of the First Stars on Reionization
• CMB Anisotropies due to Feedback-Regulated Inhomogeneous Reionization
• Cosmological Reionization

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• The kinetic Sunyaev-Zel'dovich signal from inhomogeneous reionization: a parameter space study
• Secondary anisotropies of the CMB
• Nonlinear Kinetic Sunyaev-Zeldovich Effect
• Reionization on Large Scales III: Predictions for Low-ell Cosmic Microwave Background Polarization and High-ell Kinetic Sunyaev-Zel'dovich Observables
• Precision era of the kinetic Sunyaev-Zeldovich effect: simulations, analytical models and observations and the power to constrain reionization
• The phase-diagram of cosmological baryons
• Beyond the Damping Tail: Cross-Correlating the Kinetic Sunyaev-Zel'dovich Effect with Cosmic Shear
• The Kinetic Sunyaev-Zel'dovich Effect from Reionization: Simulated Full Sky Maps at Arcminute Resolution
• Hydrodynamical simulations of the Sunyaev-Zel'dovich effect: the kinetic effect
• Cluster Masses from CMB and Galaxy Weak Lensing
• Statistics of Sunyaev-Zel'dovich Cluster Surveys
• Dynamics of gravitational clustering I. Building perturbative expansions
• The Maximum B-mode Polarization of the Cosmic Microwave Background from Inhomogeneous Reionization
• Sunyaev-Zel'dovich Predictions for the Planck Surveyor Satellite using the Hubble Volume Simulations
• A Linear Perturbation Theory of Inhomogeneous Reionization
• Polarization of the Cosmic Microwave Background from Non-Uniform Reionization
• Reconstructing large scales at cosmic dawn
• Extracting the late-time kinetic Sunyaev-Zel'dovich effect
• Teaching neural networks to generate Fast Sunyaev Zel'dovich Maps
• Primordial quadrupole-induced polarisation from filamentary structures and galaxy clusters
• Mutual Constraints Between Reionization Models and Parameter Extraction From Cosmic Microwave Background Data
• Secondary CMB anisotropies from bulk motions in the presence of stochastic magnetic fields
• Polarization of Sunyaev-Zeldovich signal due to electron pressure anisotropy in galaxy clusters
• CMB Signatures of Extended Reionization
• The Statistics of Cosmological Lyman-alpha Absorption