Power spectrum for the small-scale Universe
نویسندگان
چکیده
منابع مشابه
Small-scale Power Spectrum and Correlations in Λcdm
Cosmological models with a positive cosmological constant (Λ > 0) and Ω0 < 1 have a number of attractive features. A larger Hubble constant H0, which can be compatible with the recent HST estimate, and a large fraction of baryon density in galaxy clusters make them current favorites. Early galaxy formation also is considered as a welcome feature of these models. But early galaxy formation impli...
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A crucial issue in cosmology is the determination of the fluctuation power spectrum. The standard picture of the matter clustering, the Cold Dark Matter model (and its variant), assumes that, on scales smaller than a certain “flattening scale” λf , the power spectrum increases with the scale, while on much larger scales it decreases so to match the tiny fluctuations observed in the microwave ba...
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Equations to investigate fluctuations in cosmic x-ray background radiation due to pointlike sources at high-redshift are formulated in a systematic way. The angular power spectrum of x-ray background fluctuations is investigated from large scales to small scales in various cosmological models such as open universe models and models with the cosmological constant, assuming a simple evolution mod...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2009
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2009.15075.x