Search Results - "Reionization"
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The bispectrum and 21-cm foregrounds during the Epoch of Reionization
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The effect of interplanetary scintillation on epoch of reionization power spectra
Published 2015“…These radio sources are a potential foreground contaminant signal for redshifted HI emission from the Epoch of Reionization (EoR) because they yield time-dependent flux density variations in bright extragalactic point sources. …”
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Lyman α emitters gone missing: evidence for late reionization?
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Planck intermediate results. XLVII. Planck constraints on reionization history
Published 2016Subjects: Get full text
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An Improved Statistical Point-source Foreground Model for the Epoch of Reionization
Published 2017“…We present a sophisticated statistical point-source foreground model for low-frequency radio Epoch of Reionization (EoR) experiments using the 21 cm neutral hydrogen emission line. …”
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Reionization and high-redshift galaxies: the view from quasar absorption lines
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Investigating the contribution of extended radio sources to the Epoch of Reionization power spectrum
Published 2022Subjects: “…cosmology: dark ages, reionization, first stars…”
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Subtraction of Bright Point Sources from Synthesis Images of the Epoch of Reionization
Published 2011“…Simulations show that this technique can improve the dynamic range of epoch-of-reionization maps by 2–3 orders of magnitude.…”
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Epoch of reionization window. II. Statistical methods for foreground wedge reduction
Published 2014“…For there to be a successful measurement of the 21 cm epoch of reionization (EoR) power spectrum, it is crucial that strong foreground contaminants be robustly suppressed. …”
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Study of redshifted H I from the epoch of reionization with drift scan
Published 2014“…The detection of the Epoch of Reionization (EoR) in the redshifted 21-cm line is a challenging task. …”
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Assessment of Ionospheric Activity Tolerances for Epoch of Reionization Science with the Murchison Widefield Array
Published 2018“…Structure imprinted in foreground extragalactic point sources by ionospheric refraction has the potential to contaminate Epoch of Reionization (EoR) power spectra of the 21 cm emission line of neutral hydrogen. …”
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Robust statistics towards detection of the 21 cm signal from the Epoch of Reionization
Published 2019“…We explore methods for robust estimation of the 21 cm signal from the Epoch of Reionization (EoR). A Kernel Density Estimator (KDE) is introduced for measuring the spatial temperature fluctuation power spectrum from the EoR. …”
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Exploring the evolution of reionization using a wavelet transform and the light cone effect
Published 2016“…© 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.The Cosmic Dawn and Epoch of Reionization, during which collapsed structures produce the first ionizing photons and proceed to reionize the intergalactic medium, span a large range in redshift (z ~ 30-6) and time (tage ~ 0.1-1.0 Gyr). …”
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The Impact of Point-Source Subtraction Residuals on 21 cm Epoch of Reionization Estimation
Published 2012“…Precise subtraction of foreground sources is crucial for detecting and estimating 21 cm H I signals from the Epoch of Reionization (EoR). We quantify how imperfect point-source subtraction due to limitations of the measurement data set yields structured residual signal in the data set. …”
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On the detectability of the hydrogen 3-cm fine-structure line from the epoch of reionization
Published 2008“…< 13.6 eV, that permeates neutral intergalactic gas during the epoch of reionization (EoR) excites the 2p (directly) and 2s (indirectly) states of atomic hydrogen. …”
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