Toward a Precise Measurement of Matter Clustering: Lyα Forest Data at Redshifts 2–4
نویسندگان
چکیده
منابع مشابه
Towards a Precise Measurement of Matter Clustering: Lyman-alpha Forest Data at Redshifts 2-4
We measure the filling factor, correlation function, and power spectrum of transmitted flux in a large sample of Lyα forest spectra, comprised of 30 Keck HIRES spectra and 23 Keck LRIS spectra. We infer the linear matter power spectrum P (k) from the flux power spectrum PF (k), using an improved version of the method of Croft et al. (1998) that accounts for the influence of redshift-space disto...
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The correlation between Lyα absorption in the spectra of quasar pairs can be used to measure the transverse distance scale at z ∼ 2, which is sensitive to the cosmological constant (ΩΛ) or other forms of vacuum energy. Using Hydro-PM simulations, I compute the three-dimensional power spectrum of the Lyα forest flux, PF (k), from which the redshift-space anisotropy of the correlation can be obta...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2002
ISSN: 0004-637X,1538-4357
DOI: 10.1086/344099