Redshift space distortion of 21 cm line at 1 < $z$ < 5 with cosmological hydrodynamic simulations
نویسندگان
چکیده
منابع مشابه
Massive Galaxies at Redshift 2 in Cosmological Hydrodynamic Simulations
We study the properties of galaxies at redshift z = 2 in a Λ cold dark matter (ΛCDM) universe, using two different types of hydrodynamic simulation methods – Eulerian TVD and smoothed particle hydrodynamics (SPH) – and a spectrophotometric analysis in the Un, G, R filter set. The simulated galaxies at z = 2 satisfy the color-selection criteria proposed by Adelberger et al. (2004) and Steidel et...
متن کاملMassive galaxies & EROs at z = 1 − 3 in cosmological hydrodynamic simulations : near - IR properties
Recent observations have revealed a population of red massive galaxies at high redshift which are challenging to explain in hierarchical galaxy formation models. We analyze this “massive galaxy problem” with two different types of hydrodynamic simulations – Eulerian total variation diminishing (TVD) and smoothed particle hydrodynamics (SPH) — of a concordance Λ cold dark matter (ΛCDM) universe....
متن کاملRedshift Space 21 Cm Power Spectra from Reionization
We construct a simple but self-consistent analytic ionization model for rapid exploration of 21cm power spectrum observables in redshift space. It is fully described by the average ionization fraction xe(z) and HII patch size R(z) and has the flexibility to accommodate various reionization scenarios. The model associates ionization regions with dark matter halos of the number density required t...
متن کاملMassive galaxies in cosmological simulations : UV - selected sample at redshift z = 2
We study the properties of galaxies at redshift z = 2 in a Λ cold dark matter (ΛCDM) universe, using two different types of hydrodynamic simulation methods (Eulerian TVD and SPH) and a spectrophotometric analysis in the Un, G,R filter set. The simulated galaxies at z = 2 satisfy the color-selection criteria proposed by Adelberger et al. (2004) and Steidel et al. (2004) when we assume Calzetti e...
متن کاملVariable 21 cm absorption at z = 0 . 3127
We report multi-epoch GMRT HI observations of the z = 0.3127 damped absorber towards the quasar PKS 1127-145 , which reveal variability in both the absorption profile and the flux of the background source, over a timescale of a few days. The observed variations cannot be explained by simple inter-stellar scintillation (ISS) models where there are only one or two scintillating components and all...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2019
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stz319