The kinetic Sunyaev-Zel’dovich signal from inhomogeneous reionization: a parameter space study
نویسندگان
چکیده
منابع مشابه
Cosmology with Sunyaev-Zeldovich observations from space
In order to assess the potential of future microwave anisotropy space experiments for detecting clusters by their Sunyaev-Zeldovich (SZ) thermal effect, we have simulated maps of the large scale distribution of their Compton parameter y and of the temperature anisotropy ∆T/T induced by their proper motion. Our model is based on a predicted distribution of clusters per unit of redshift and flux ...
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We show how the temperature and the polarisation of the cosmic microwave background are affected by bulk rotation of clusters of galaxies owing to the kinetic Sunyaev-Zeldovich effect. The main effects of rotation are (i) a shift of the position of the peak of the temperature fluctuation relative to the center of the cluster by a few percent of the core radius and (ii) a tilt of the direction o...
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During passage through a cluster of galaxies some of the photons of the cosmic microwave background (CMB) radiation are scattered by electrons in the hot intracluster (IC) gas. The scattering slightly modifies the incident Planck spectrum, imprinting on it a unique spectral signature that was first described by Sunyaev & Zeldovich (1972). [The impact of hypothetical hot intergalactic gas on the...
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The kinetic SZ effect, which is the dominant CMB source at arc-minute scale and ν ∼ 217 Ghz, probes the ionized gas peculiar momentum up to the epoch of reionization and is a sensitive measure of the reionization history. We ran high resolution self-similar and ΛCDM hydro simulations and built an analytical model to study this effect. Our model reproduces the ΛCDM simulation results to several ...
متن کاملSunyaev-Zeldovich Fluctuations from the First Stars?
WMAP’s detection of high electron-scattering optical depth τe suggests substantial star formation at high redshift z ∼ 17±5. On the other hand, the recovered σ8 ∼ 0.84± 0.04 disfavors a cluster Sunyaev-Zeldovich (SZ) origin for the observed small-scaleCMB fluctuation excess, which generally requires σ8 ∼ 1.1. Here we consider the effects of high-redshift star formation on the CMB. We derive a f...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2012
ISSN: 0035-8711
DOI: 10.1111/j.1365-2966.2012.20713.x