Evidence for Reionization at z ~ 6: Detection of a Gunn-Peterson Trough in a z=6.28 Quasar

Abstract

We present moderate resolution Keck spectroscopy of quasars at z=5.82, 5.99 and 6.28, discovered by the Sloan Digital Sky Survey (SDSS). We find that the Ly Alpha absorption in the spectra of these quasars evolves strongly with redshift. To z~5.7, the Ly Alpha absorption evolves as expected from an extrapolation from lower redshifts. However, in the highest redshift object, SDSSp J103027.10+052455.0 (z=6.28), the average transmitted flux is 0.0038+-0.0026 times that of the continuum level over 8450 A < lambda < 8710 A (5.95<z(abs)<6.16), consistent with zero flux. Thus the flux level drops by a factor of >150, and is consistent with zero flux in the Ly Alpha forest region immediately blueward of the Ly Alpha emission line, compared with a drop by a factor of ~10 at z(abs)~5.3. A similar break is seen at Ly Beta; because of the decreased oscillator strength of this transition, this allows us to put a considerably stronger limit, tau(eff) > 20, on the optical depth to Ly Alpha absorption at z=6. This is a clear detection of a complete Gunn-Peterson trough, caused by neutral hydrogen in the intergalactic medium. Even a small neutral hydrogen fraction in the intergalactic medium would result in an undetectable flux in the Ly Alpha forest region. Therefore, the existence of the Gunn-Peterson trough by itself does not indicate that the quasar is observed prior to the reionization epoch. However, the fast evolution of the mean absorption in these high-redshift quasars suggests that the mean ionizing background along the line of sight to this quasar has declined significantly from z~5 to 6, and the universe is approaching the reionization epoch at z~6.

Revised version (2001 Sep 4) accepted by the Astronomical Journal (minor changes)

References in corpus (2)

• Absorption Systems in the Spectra of 66 z > 4 Quasars
• UVES observations of a damped Ly-alpha system at z_abs = 4.466 towards the quasar APM BR J0307-4945

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• Searching for Star Formation Beyond Reionization
• Implications of WMAP 3 Year Data for the Sources of Reionization
• The Intrinsic Fractions and Radio Properties of Low Ionization Broad Absorption Line Quasars
• 21 cm Absorption Studies with the Square Kilometer Array
• Implications of Quasar Black Hole Masses at High Redshifts
• Stellar populations and Lya emission in two lensed z>~6 galaxies
• Testing deviations from $\Lambda$CDM with growth rate measurements from 6 Large Scale Structure Surveys at $\mathbf{z}=0.06$ to 1
• Constraining reionization using 21 cm observations in combination with CMB and Lyman-alpha forest data
• Impact of Primordial Ultracompact Minihaloes on the Intergalactic Medium and First Structure Formation
• Spectroscopically Confirmed Lyman-Alpha Emitters from Redshift 5 to 7 Behind Ten Galaxy Cluster Lenses
• Star Formation at the Twilight of the Dark Ages: Which Stars Reionized the Universe?
• Dissipation of Magnetic Flux in Primordial Gas Clouds
• Quasar H II Regions During Cosmic Reionization
• Two more, bright, z > 6 quasars from VST ATLAS and WISE
• The effect of peculiar velocities on the epoch of reionization (EoR) 21-cm signal
• On the faint-end of the high-$z$ galaxy luminosity function
• Lyman continuum leaking AGN in the SSA22 field
• Primordial Globular Clusters, X-Ray Binaries & Cosmological Reionisation
• Statistics of the epoch of reionization 21-cm signal - I. Power spectrum error-covariance
• Combining WMAP and SDSS Quasar Data on Reionization Constrains Cosmological Parameters and the Star Formation Efficiency
• Discovery of a Radio-Selected z ~ 6 Quasar
• The Ionizing Photon Production Efficiency (${\xi }_{ion}$) Of Lensed Dwarf Galaxies At $z\sim 2$
• Constraining the Redshift z=6 Quasar Luminosity Function Using Gravitational Lensing
• Cosmological perturbations and the reionization epoch
• Constraints on First-Light Ionizing Sources from Optical Depth of the Cosmic Microwave Background
• Cosmic Reionization On Computers. Properties of the Post-reionization IGM
• The star formation history of the Sculptor dwarf spheroidal galaxy
• Discovery of 24 radio-bright quasars at $4.9\le z\le 6.6$ using low-frequency radio observations
• The star formation history of the Sextans dwarf spheroidal galaxy: a true fossil of the pre-reionization era
• On Modeling and Measuring the Temperature of the z~5 IGM
• Lyman "bump" galaxies - I. Spectral energy distribution of galaxies with an escape of nebular Lyman continuum
• Tracing Lyman-alpha and Lyman Continuum Escape in Galaxies with Mg II Emission
• Constraining large scale HI bias using redshifted 21-cm signal from the post-reionization epoch
• The Ionizing Efficiency of the First Stars
• Compact radio cores: from the first black holes to the last
• 21 cm Tomography of the High-Redshift Universe with the Square Kilometer Array
• Scale-dependent Galaxy Bias
• Constraining Lyman-alpha spatial offsets at $3<z<5.5$ from VANDELS slit spectroscopy
• Redshift space 21 cm power spectra from reionization
• Modelling the luminosities and sizes of radio galaxies: radio luminosity function at z = 6
• Galactic Wind Signatures around High Redshift Galaxies
• Redshifted 21-cm Bispectrum I: Impact of the Redshift Space Distortions on the Signal from the Epoch of Reionization
• Primordial magnetic fields and the HI signal from the epoch of reionization
• Inferring the Thermal History of the Intergalactic Medium from the Properties of the Hydrogen and Helium Lyman-alpha Forest
• The Space Density of Redshift 5.7 Ly-Alpha Emitters
• RELICS: Strong Lensing Analysis of MACS J0417.5-1154 and Predictions for Observing the Magnified High-Redshift Universe with JWST
• HST and Spitzer Observations of the Host Galaxy of GRB 050904: A Metal-Enriched, Dusty Starburst at z=6.295
• Ultraviolet Background Radiation from Cosmic Structure Formation
• Extracting cosmic microwave background polarisation from satellite astrophysical maps
• The Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST) Quasar Survey: Quasar Properties from Data Release Six to Nine
• Dark stars: Implications and constraints from cosmic reionization and extragalactic background radiation
• Discovery of an Optically-Faint Quasar at z=5.70 and Implications for the Faint End of the Quasar Luminosity Function
• A Statistical Analysis of Intergalactic Medium Transmission Approaching Reionization
• Detection of Intergalactic HeII Absorption at Redshift 3.5
• Probing the Epoch of Reionization with the Lyman Alpha Forest at z~4-5
• Discovery of a Transient U-band Dropout in a Lyman-Break Survey: A Tidally-Disrupted Star at z = 3.3?
• A High Yield of New Sightlines for the Study of Intergalactic Helium: Far-UV-Bright Quasars from SDSS, GALEX, and HST
• Lyman Break Galaxies and the Reionization of the Intergalactic Medium
• Hubble Advanced Camera for Surveys Observations of the z=6.42 Quasar SDSS 1148+5251: A Leak in the Gunn-Peterson Trough
• Wide-field LOFAR-LBA power-spectra analyses: Impact of calibration, polarization leakage and ionosphere
• Swift observations of GRB050904: the most distant cosmic explosion ever observed
• A cryogenic liquid-mirror telescope on the moon to study the early universe
• The Shape and Size distribution of HII Regions near the percolation transition
• Measuring the reionization optical depth without large-scale CMB polarization
• Effects of the sources of reionization on 21-cm redshift-space distortions
• Studying the morphology of HI isodensity surfaces during reionization using Shapefinders and percolation analysis
• [CII] line intensity mapping the epoch of reionization with the Prime-Cam on FYST
• The Damping Wing of the Gunn-Peterson Absorption and Lyman-Alpha Emitters in the Pre-Reionization Era
• First Constraints on Small-Scale Non-Gaussianity from UV Galaxy Luminosity Functions
• How Neutral is the Intergalactic Medium at z ~ 6?
• Review of scientific topics for Millimetron space observatory
• Dark Energy in a Hyperbolic Universe
• Patchy He II reionization and the physical state of the IGM
• The Stellar Initial Mass Function at the Epoch of Reionization
• Elemental Abundances in the Broad Emission Line Region of Quasars at Redshifts larger than 4
• Texas Spectroscopic Search for Ly$\alpha$ Emission at the End of Reionization I. Constraining the Ly$\alpha$ Equivalent Width Distribution at 6.0 < $z$ < 7.0
• Constraining the X-ray heating and reionization using 21-cm power spectra with Marginal Neural Ratio Estimation
• The impact of non-Gaussianity on the error covariance for observations of the Epoch of Reionization 21-cm power spectrum
• The 6C** sample of steep-spectrum radio sources: I - Radio data, near-infrared imaging and optical spectroscopy
• Discovery of the most X-ray luminous quasar SRGE J170245.3+130104 at redshift z$\approx 5.5$
• Galaxy Formation in Heavily Overdense Regions at z~10: the Prevalence of Disks in Massive Halos
• The X-ray Spectrum of the z=6.30 QSO SDSS J1030+0524
• Rayleigh Scattering Cross Section Redward of Ly$\alpha$ by Atomic Hydrogen
• Detections of Faint Lyman-alpha Emitters at z = 5.7: Galaxy Building Blocks and Engines of Reionization
• The spin temperature of neutral hydrogen during cosmic pre-reionization
• A Census of the LyC Photons that Form the UV Background During Reionization
• Cosmological Structure Formation in Decaying Dark Matter Models
• The effects of primordial non-Gaussianity on the cosmological reionization
• Random Forests as a viable method to select and discover high redshift quasars
• Extracting bias using the cross-bispectrum: An EoR and 21 cm-[CII]-[CII] case study
• Large-scale environment of z~5.7 CIV absorption systems I: projected distribution of galaxies
• Reionization and dark matter decay
• The Sky Polarization Observatory
• Predictions for measuring the 21-cm multi-frequency angular power spectrum using SKA-Low
• Future Evolution of the Intergalactic Medium in a Universe Dominated by a Cosmological Constant
• Subtraction of Bright Point Sources from Synthesis Images of the Epoch of Reionization
• Early Preheating and Galaxy Formation
• A Fast, Accurate and Robust Algorithm For Transferring Radiation in Three-Dimensional Space
• The Dark Side of QSO Formation at High Redshifts
• Deeper multi-redshift upper limits on the Epoch of Reionization 21-cm signal power spectrum from LOFAR between z=8.3 and z=10.1
• Cosmological Implications of the Very High Redshift GRB 050904
• Constraint on intergalactic dust from thermal history of intergalactic medium
• Reionization in the Warm Dark Matter Model
• High redshift radio quiet quasars -- exploring parameter space of accretion models. Part II: patchy corona model
• Mass-loss predictions for evolved very metal-poor massive stars
• Patchy Screening of the Cosmic Microwave Background by Inhomogeneous Reionization
• Dust emission and star formation toward a redshift 5.5 QSO
• Radiation from early black holes - I: effects on the neutral inter-galactic medium
• A Linear Perturbation Theory of Inhomogeneous Reionization
• Helium reionization and the thermal proximity effect
• Surfing gravitational waves: can bigravity survive growing tensor modes?
• How to Search for Islands of Neutral Hydrogen in the $z\sim 5.5$ IGM
• On dark matter - dark radiation interaction and cosmic reionization
• Chemical evolution of the intra-cluster medium
• Positivity bounds from multiple vacua and their cosmological consequences
• First Constraints on the Epoch of Reionization Using the non-Gaussianity of the Kinematic Sunyaev-Zel{'}dovich Effect from the South Pole Telescope and {\it Herschel}-SPIRE Observations
• New Evidence for Extended HeII Reionization at z>3.5 from HeII Lyman Alpha and Beta Transmission Spikes
• RESOLVE and ECO: The Halo Mass-Dependent Shape of Galaxy Stellar and Baryonic Mass Functions
• The Accretion Geometry in Radio-Loud Active Galaxies
• The Distribution and Evolution of Quasar Proximity Zone Sizes
• Cosmic Reionization May Still Have Started Early and Ended Late: Confronting Early Onset with CMB Anisotropy and 21 cm Global Signals
• Physics of the cosmic microwave background anisotropy
• Discovery of a z=4.93, X-ray selected quasar by the Chandra Multiwavelength Project (ChamP)
• VLT/XSHOOTER & Subaru/MOIRCS Spectroscopy of HUDF-YD3: No Evidence for Lyman-alpha Emission at z=8.55
• High redshift radio quiet quasars - exploring the parameter space of accretion models. Part I: hot semi-spherical flow
• The Ionizing Spectra of Extremely Metal-Poor O Stars: Constraints from the Only HII Region in Leo P
• Color-redshift Relations and Photometric Redshift Estimations of Quasars in Large Sky Surveys
• SuperBoRG: Search for The Brightest of Reionizing Galaxies and Quasars in HST Parallel Imaging Data
• Texas Spectroscopic Search for Ly$\alpha$ Emission at the End of Reionization II. The Deepest Near-Infrared Spectroscopic Observation at $z\gtrsim 7$
• Data-constrained reionization and its effects on cosmological parameters
• Reionization on Large Scales II: Detecting Patchy Reionization through Cross Correlation of the Cosmic Microwave Background
• Ly alpha emissters at z=6.5 in the SSA22 field: An area more neutral or void at the end of the reionization epoch
• Star Forming Galaxies at z~6 and Reionization
• The BINGO Project VI: HI Halo Occupation Distribution and Mock Building
• Simulating the impact of HI fluctuations on matched filter search for ionized bubbles in redshifted 21 cm maps
• How is the Reionization Epoch Defined?
• MIRI Deep Imaging Survey (MIDIS) of the Hubble Ultra Deep Field
• The impact of non-Gaussianity on the Epoch of Reionization parameter forecast using 21-cm power spectrum measurements
• Observational Constraints in Nonlocal Gravity: the Deser-Woodard Case
• Quasars as probes of cosmological reionization
• Transition From Population III to Population II Stars
• Observing the First Stars and Black Holes
• Scaling defect decay and the reionization history of the Universe
• An updated estimate of the cosmic radio background and implications for ultra-high-energy photon propagation
• A Bayesian analysis of redshifted 21-cm HI signal and foregrounds: Simulations for LOFAR
• Constraints on Star Forming Galaxies at z> 6.5 from HAWK-I Y-band Imaging of GOODS-South
• Statistical analysis of the causes of excess variance in the 21 cm signal power spectra obtained with the Low-Frequency Array
• The Wide Field Imager Lyman-Alpha Search (WFILAS) for Galaxies at Redshift ~5.7: II. Survey Design and Sample Analysis
• Decline of the space density of quasars between z=2 and z=4
• Direct evidence for an early reionization of the Universe?
• The Formation and Evolution of the First Massive Black Holes
• Far-Ultraviolet Spectra of Main-Sequence O Stars at Extremely Low Metallicity
• Measuring the Stellar Masses of z~7 Galaxies with Spitzer Ultrafaint Survey Program (SURFS UP)
• The Size and Pervasiveness of Ly$\alpha$-UV Spatial Offsets in Star-Forming Galaxies at $z\sim 6$
• Gemini H-band imaging of the field of a z=10 candidate
• He II Lyβ Gunn-Peterson Absorption: New HST Observations, and Theoretical Expectations
• Modified theory of gravity and the history of cosmic evolution
• Probing Reionization with Quasar Spectra: the Impact of the Intrinsic Lyman-alpha Emission Line Shape Uncertainty
• Quasar Factor Analysis -- An Unsupervised and Probabilistic Quasar Continuum Prediction Algorithm with Latent Factor Analysis
• Chandra Detection of Highest Redshift (z~6) Quasars in X-rays
• The Dark Ages of the Universe and Hydrogen Reionization
• Reionization Histories of Milky Way Mass Halos
• Redshift space distortions of the {\rm HI} 21-cm intensity mapping signal due to the internal motions within galaxies
• Lyman$\alpha$ Emitters beyond Redshift 5:The Dawn of Galaxy Formation
• Modelling the post-reionization neutral hydrogen ($\mathrm{HI}$) 21-cm bispectrum
• The role of Pop III stars and early black holes in the 21cm signal from Cosmic Dawn
• Squeezing MOND into a Cosmological Scenario
• Constraining the Black Hole Mass Spectrum with Gravitational Wave Observations I: The Error Kernel
• Testing cosmological models and understanding cosmological parameter determinations with metaparameters
• Methods of Error Estimation for Delay Power Spectra in $21\text{cm}$ Cosmology
• Observational evidence favors a static universe
• Constraints on primordial black holes and primeval density perturbations from the epoch of reionization
• Gemini-South + FLAMINGOS Demonstration Science: Near-Infrared Spectroscopy of the z=5.77 Quasar SDSS J083643.85+005453.3
• Constraining the epoch of reionization from the observed properties of the high-z Universe
• Cosmic Variance In the Transparency of the Intergalactic Medium After Reionization
• Quasars as Probes of Late Reionization and Early Structure Formation
• Universe opacity and CMB
• The frequency of very young galaxies in the local Universe: I. A test for galaxy formation and cosmological models
• Normal Parameters for an Analytic Description of the CMB Cosmological Parameter Likelihood
• The structure of Andromeda II dwarf spheroidal galaxy
• Late-end reionization with ATON-HE: towards constraints from Lyman-$\alpha$ emitters observed with JWST
• Observing H2 Emission in Forming Galaxies
• Sky-averaged 21-cm signal extraction using multiple antennas with an SVD framework: the REACH case
• An analytic model for the transition from decelerated to accelerated cosmic expansion
• Quantifying Density-Ionization Correlations with the 21cm Power Spectrum
• Galaxies Inside Stromgren Spheres of Luminous Quasars at z>6: Detection of The First Galaxies
• Mutual Constraints Between Reionization Models and Parameter Extraction From Cosmic Microwave Background Data
• Near-Infrared Colors of Gamma-Ray Burst Afterglows and Cosmic Reionization History
• MMTF Discovery of Giant Ionization Cones in MR 2251-178: Implications for Quasar Radiative Feedback
• Linking Mg II and [O II] spatial distribution to ionizing photon escape in confirmed LyC leakers and non-leakers
• Calibration Requirements for Epoch of Reionization 21-cm signal observations -- I. Effect of time-correlated gains
• Cosmic microwave background polarization analysis
• The Metallicity of the Redshift 4.16 Quasar BR2248-1242
• Cosmic histories of star formation and reionization: An analysis with a power-law approximation
• Observations of the High Redshift Universe
• Observational estimates of the initial power spectrum at small scale from Lyman-$\alpha$ absorbers
• The effects of binary stars on galaxies and metal-enriched gas during reionization
• A Simple Prediction on the Surface Density of Galaxies at z ~ 6
• The ACS LCID Project XI. On the early time resolution of LG dwarf galaxy SFHs: Comparing the effects of reionization in models with observations
• Non-equilibrium temperature evolution of ionization fronts during the Epoch of Reionization
• Distinguishing the impact and signature of black holes from different origins in early cosmic history
• Gaussian Process Reconstruction of Reionization History
• Detecting the Highest Redshift (z > 8) QSOs in a Wide, Near Infrared Slitless Spectroscopic Survey
• Complete IRAC mapping of the CFHTLS-DEEP, MUSYC AND NMBS-II FIELDS
• CII and HI 21-cm line intensity mapping from the EoR: Impact of the light-cone effect on auto and cross-power spectra
• Source Mergers and Bubble Growth During Reionization
• Beyond optical depth: Future determination of ionization history from the CMB
• Discovery of a very Lyman-$\alpha$-luminous quasar at z=6.62
• The influence of ultra-high-energy cosmic rays on star formation in the early universe
• Quintessence and the Curvature of the Universe after WMAP
• Axial Anomaly in Galaxies and the Dark Universe
• Relic photon temperature versus redshift and the cosmic neutrino background
• An Analytic Formulation of 21-cm Signal from Early Phase of Epoch of Reionization
• Wide Field Surveys and Astronomical Discovery Space
• The first spectral line surveys searching for signals from the Dark Ages
• Implications of the Lyman alpha Emission Line from a Candidate z=10 Galaxy
• Introducing the Texas Euclid Survey for Lyman Alpha (TESLA) Survey: Initial Study Correlating Galaxy Properties to Lyman-Alpha Emission
• Chandra measurement of the X-ray spectrum of a quasar at z=5.99
• New limit on pseudoscalar-photon mixing from WMAP Observations
• Asymmetric Deviation of the Scattering Cross Section around Ly$\alpha$ by Atomic Hydrogen
• SU(2) Yang-Mills Theory: Waves, Particles, and Quantum Thermodynamics
• Simulation-Based Inference of the sky-averaged 21-cm signal from CD-EoR with REACH
• SU(2)${}_{\mathrm{CMB}}$ and the cosmological model: angular power spectra
• Statistics of Neutral Regions During Hydrogen Re-Ionization
• Joint Survey Processing I: Compact oddballs in the COSMOS field -- low-luminosity Quasars at z > 6?
• Non-parametric Reconstruction of Photon Escape Fraction from Reionization
• The monopole and quadrupole moments of the Epoch of Reionization (EoR) 21-cm bispectrum
• Prospects of probing quintessence with HI 21-cm intensity mapping survey
• Lyman Break Galaxies and Reionization of the Universe
• Identifying high-redshift GRBs with RATIR
• Gravitational Microlensing Events as a Target for SETI project
• Is there another coincidence problem at the reionization epoch?
• Statistical characteristics of observed Ly-$\alpha$ forest and the shape of linear power spectrum
• Statistical characteristics of observed Ly-$\alpha$ forest and the shape of initial power spectrum
• CMB Optical Depth Measurements: Past, Present, Future
• What have we learned from observational cosmology ?
• Outflowing material in the zem = 4.92 BAL QSO SDSS~J160501.21-011220.0
• Probing patchy reionisation with JWST: IGM opacity constraints from the Lyman-$\alpha$ forest of galaxies in legacy extragalactic fields
• Calibration requirements for Epoch of Reionization 21-cm signal observations -- II. Analytical estimation of the bias and variance with time-correlated residual gains
• Cosmic Reionization and the First Nonlinear Structures in the Universe
• Modern Cosmology, an Amuse-Gueule
• Detectability of Supermassive Dark Stars with the Roman Space Telescope
• The Wouthuysen-Field effect in a clumpy intergalactic medium
• Understanding the spatial variation of \ion{Mg}{II} and ionizing photon escape in a local LyC leaker
• The parameter-free Finger-Of-God model and its application to 21cm intensity mapping
• WMAP Polarization Results
• Impact of the Epoch of Reionization sources on the 21-cm bispectrum
• First upper limits on the 21-cm signal power spectrum of neutral hydrogen at $z=9.16$ from the LOFAR 3C196 field
• Semi-Numerical Simulation of Reionization with Semi-Analytical Modeling of Galaxy Formation
• Line of sight anisotropies in the Cosmic Dawn and EoR 21-cm power spectrum
• The Lyman-alpha and Continuum Origins Survey. I. Survey description and Ly$\alpha$ imaging
• Cosmic Microwave Background Polarization and reionization: constraining models with a double reionization
• Reionization: Characteristic Scales, Topology and Observability
• Inference of the optical depth to reionization $\tau$ from $\text{Planck}$ CMB maps with convolutional neural networks
• Searching for high-redshift centimeter-wave continuum, line and maser emission using the Square Kilometer Array
• Probing Ultra-light Axion Dark Matter from 21cm Tomography using Convolutional Neural Networks
• Subaru medium-resolution spectra of a QSO at z=6.62: Three reionization tests
• Constraining the reionization history with large angle CMB polarization
• Cosmic Microwave Background constraints of decaying dark matter particle properties
• Applications of High Resolution High Sensitivity Observations of the CMB
• Studying the Multi-frequency Angular Power Spectrum of the Cosmic Dawn 21-cm Signal
• Are Two z~6 Quasars Gravitationally Lensed ?
• Reionization and Structure Formation with ARCADE
• Time-Dependent Behavior of Lyman$\alpha$ Photon Transfer in High Redshift Optically Thick Medium
• Analytic Formulation of 21 cm Signal from Cosmic Dawn: Ly$\alpha$ Fluctuations
• Initial Li Abundances in the Protogalaxy and Globular Clusters Based upon the Chemical Separation and Hierarchical Structure Formation
• A Cosmic Milestone: Constraints from Metal-Poor Halo Stars on the Cosmological Reionization Epoch
• Optical and Infrared Non-detection of the z=10 Galaxy Behind Abell 1835
• Cosmic opacity to CMB photons and polarization measurements
• Deep VLT V-band Imaging of the Field of a z=10 Candidate Galaxy: Below the Lyman Limit?
• Cosmological parameters from Planck data in SU(2)${}_{\mathrm{CMB}}$, their local $\Lambda$CDM values, and the modified photon Boltzmann equation
• Secondary CMB anisotropies from bulk motions in the presence of stochastic magnetic fields
• The 21cm Signature of Early Relic \HII Regions
• Hydrogen 2p--2s transition: signals from the epochs of recombination and reionization
• Cosmic reionization in a dynamic quintessence cosmology
• Cosmic reionization constraints on the nature of cosmological perturbations
• Metal Enrichment and Reionization Constraints on Early Star Formation
• Nature of Dark Energy and Polarization Measurements
• Probing baryonic processes and gastrophysics in the formation of the Milky Way dwarf satellites: I. metallicity distribution properties
• On the viability of a certain vector-tensor theory of gravitation
• Energy injection in pre-recombination era and EDGES detection
• First Light and Reionization: A Conference Summary
• Ly$\alpha$ Leaks in the Absorption Spectra of High Redshift QSOs
• Evolving beyond z=0: insights about the future of stars and the intergalactic medium
• Sky surveys and deep fields of ground-based and space telescopes
• Cosmic Reionization Study : Principle Component Analysis After Planck
• A complete search for redshift z>6.5 quasars in the VIKING survey
• Star Formation Histories of Dwarf Spheroidal and Dwarf Elliptical Galaxies in the Local Universe
• Optical-NIR spectra of quasars close to reionization (z~ 6)
• Quasars and their host galaxies
• pop-cosmos: Insights from generative modeling of a deep, infrared-selected galaxy population
• Selected Chapters on Active Galactic Nuclei as Relativistic Systems
• Subaru Studies of the Cosmic Dawn
• Cosmic microwave background constraints on the tensor-to-scalar ratio
• Mass limits for heavy neutrinos
• Lyman-α polarization from cosmological ionization fronts: I. Radiative transfer simulations
• Measurement of the dispersion of radiation from a steady cosmological source
• Exploring the cosmic dark ages with the next generation of space and ground-based facilities
• Morphology of the Secondary CMB Anisotropies: the Key to "Smoldering" Reionization
• Magnetic Reconnection as a Potential Driver of X-ray Variability in Active Galactic Nuclei
• Instruments on large optical telescopes -- A case study
• Causal Set Phenomenology
• High Redshift Candidates and the Nature of Small Galaxies in the Hubble Deep Field
• Radio Wavelength Observatories within the Exploration Architecture
• The Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST) Quasar Survey: Quasar Properties from Data Release 10 to 12
• Formation and Evolution of Supermassive Black Holes
• From ANN to BNN: Inferring Reionization Parameters using Uncertainty-aware Emulators of 21-cm Summaries
• 21 cm Signal from the Thermal Evolution of Lyman-$\alpha$ during Cosmic Dawn
• On the Cross-Correlation between Dark Matter Distribution and Secondary CMB Anisotropies by Ionized Intergalactic Medium
• Too small to succeed: the difficulty of sustaining star formation in low-mass haloes
• Inflation: a quantum laboratory on cosmological scales
• The Evolving Power Spectrum for the light cone Epoch of Reionization (EoR) 21-cm signal
• SU(2) Yang-Mills thermodynamics: a priori estimate and radiative corrections
• Discovery of a New Blue Quasar: SDSS J022218.03-062511.1
• Does History Repeat Itself? Periodic Time Cosmology
• Discovery of a New Quasar: SDSS J022155.26-064916.6
• Dark energy constraints in light of theoretical priors
• High redshift galaxy surveys
• Thermal Evolution of the IGM due to Lyman-α photons during the Cosmic Dawn
• Cosmic Microwave Background as a thermal gas of SU(2) photons: Implications for the high-z cosmological model and the value of $H_0$
• Can luminous Lyman alpha emitters at $z$ $\simeq$ 5.7 and $z$ $\simeq$ 6.6 suppress star formation?
• The Parallel Ionizing Emissivity Survey (PIE). I. Survey design and selection of candidate Lyman Continuum leakers at 3.1<z<3.5
• Damped Lyman-alpha Absorbers in Cosmological SPH Simulations: the "metallicity problem"
• Exploration of the high-redshift universe enabled by THESEUS
• Probing Cosmological Reionization through Radio-interferometric Observations of Neutral Hydrogen
• On the Reionization of the Universe
• Quantifying and mitigating the effect of snapshot interval in light-cone Epoch of Reionization 21-cm simulations
• The Contribution of AGN Accretion Disks to Hydrogen Reionization
• A survey of NB921 dropouts in the Subaru Deep Field
• Influence of Plasma Collective Effects on Cosmological Evolution
• SU(2) Quantum Yang-Mills Thermodynamics: Some Theory and Some Applications
• A multimessenger view of galaxies and quasars from now to mid-century
• Luminosities, Masses and Star Formation Rates of Galaxies at High Redshift (IAU279 conference proceedings)
• Finding Fast Transients in Real Time Using Novel Light Curve Analysis Algorithm
• The Discovery of a Very Narrow-Line Star Forming Obat a Redshift of 5.66ject
• The Treasury of Extremely Metal-Poor O Stars
• Impact of the low solar abundance on the ages of globular clusters
• Dark Matter Energy Deposition and Production from the Table-Top to the Cosmos
• An SBC-based controller and processor for the laboratory model of PRATUSH Digital Receiver