Towards simulating and quantifying the light-cone EoR 21-cm signal
نویسندگان
چکیده
منابع مشابه
Light cone effect on the reionization 21-cm signal – II. Evolution, anisotropies and observational implications
Measurements of the H I 21-cm power spectra from the reionization epoch will be influenced by the evolution of the signal along the line-of-sight direction of any observed volume. We use numerical as well as seminumerical simulations of reionization in a cubic volume of 607Mpc across to study this so-called light-cone effect on the H I 21-cm power spectrum. We find that the light-cone effect ha...
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We present predictions for the 21 cm brightness temperature power spectrum during the Epoch of Reionization (EoR). We discuss the implications of the “light cone” effect, which incorporates evolution of the neutral hydrogen fraction and 21 cm brightness temperature along the line of sight. Using a novel method calibrated against radiation-hydrodynamic simulations, we model the neutral hydrogen ...
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Observations of redshifted 21-cm radiation from neutral hydrogen during the epoch of reionization are considered to constitute the most promising tool to probe that epoch. One of the major goals of the first generation of low-frequency radio telescopes is to measure the 3D 21-cm power spectrum. However, the 21-cm signal could evolve substantially along the lineof-sight (LOS) direction of an obs...
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A number of experiments are set to measure the 21-cm signal of neutral hydrogen from the Epoch of Reionization (EoR). The common denominator of these experiments are the large data sets produced, contaminated by various instrumental effects, ionospheric distortions, RFI and strong Galactic and extragalactic foregrounds. In this paper, the first in a series, we present the Data Model that will b...
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We show how the investigation of the redshifted 21–cm radiation can give insight into the development of structures in the early universe (at redshifts z > 5). In particular we investigate: the epoch of the first light; the fluctuations in the redshifted 21–cm emission induced by the density inhomogeneities in CDM dominated universes; the emission and absorption shells that are generated around...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2017
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stx2888