Isolating the Lyman alpha forest BAO anomaly
نویسندگان
چکیده
منابع مشابه
Explaining the Lyman-alpha forest
It is shown that many properties of Lyα forest absorbers can be derived using simple physical arguments. Analytical expressions are derived for the density and the size of an absorber as a function of its neutral hydrogen column density, which agree well with both observations and hydrodynamical simulations. An expression is presented to compute ΩIGM from the observed column density distributio...
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We outline the physical picture of the high-redshift Lyα forest that has emerged from cosmological simulations, discuss statistical characteristics of the forest that can be used to test theories of structure formation, present a preliminary comparison between simulation predictions and measurements from a sample of 28 Keck HIRES QSO spectra, and summarize the results of a recent determination ...
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The comparison of quasar absorption spectra with numerically simulated spectra from hierarchical cosmological models of structure formation promises to be a valuable tool to discriminate among these models. We present simulation results for the column density, Doppler b parameter, and optical depth probability distributions for five popular cosmological models.
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2017
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2017/04/024