Tracing the gas at redshift 1.7-3.5 with the Lyα forest: the FLO approach★
نویسندگان
چکیده
منابع مشابه
The Lyα Forest Around High Redshift Galaxies
Motivated by the relative lack of neutral hydrogen around Lyman Break Galaxies deduced from recent observations, we investigate the properties of the Lyα forest around high redshift galaxies. The study is based on improved numerical SPH simulations implementing, in addition to standard processes, a new scheme for multiphase and outflow physics description. Although on large scales our simulatio...
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We revisit the proximity effect produced by QSOs at redshifts 2.1 − 3.3 applying the FLO approach (Saitta et al. 2007) to a sample of ∼ 6300 Lyα lines fitted in 21 high resolution, high signal-to-noise spectra. This new technique allows to recover the hydrogen density field from the H i column densities of the lines in the Lyα forest, on the basis of simple assumptions on the physical state of ...
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A variety of approximate schemes for modelling the low-density Intergalactic Medium (IGM) in the high-redshift Universe is compared to the results of a large high-resolution hydro-dynamical simulation. These schemes use either an analytical description of the dark matter distribution and the IGM or numerical simulations of the DM distributions combined with different approximate relations betwe...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2008
ISSN: 0035-8711
DOI: 10.1111/j.1365-2966.2008.12860.x