Evolution of the Ionizing Background at High Redshifts

Abstract

We use a Maximum-Likelihood analysis to constrain the value and evolution of the ionizing background for 2<z<4.5, taking account of possible systematic errors. (The paper has a more detailed abstract)

12 figures (9 of those double plots), 17 pages. Accepted by MNRAS

Cited by in corpus (55)

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• The Lyman-alpha forest opacity and the metagalactic hydrogen ionization rate at z~2-4
• A Lower Bound on the Cosmic Baryon Density
• Measurements of the UV background at 4.6 < z < 6.4 using the quasar proximity effect
• GeV Gamma-Ray Attenuation and the High-Redshift UV Background
• A Uniform Analysis of the Ly-alpha forest at z = 0 - 5: II. Measuring the mean intensity of the extragalactic ionizing background using the proximity effect
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• The Statistics of Density Peaks and the Column Density Distribution of the Lyman-Alpha Forest
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• The Metagalactic Ionizing Radiation Field at Low Redshift
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• An unbiased measurement of the UV background and its evolution via the proximity effect in quasar spectra
• The Habitat Segregation between Lyman Break Galaxies and Lyman alpha Emitters around a QSO at z~5
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• Faint AGN and the Ionizing Background
• Criteria for the Formation of Population III Objects in the Ultraviolet Background Radiation
• The contribution of galaxies to the UV ionising background and the evolution of the Lyman forest
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• The phase-diagram of cosmological baryons
• A Uniform Analysis of the Ly-alpha Forest at z=0 - 5: V. The extragalactic ionizing background at low redshift
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• Properties of QSO Metal Line Absorption Systems at High Redshifts: Nature and Evolution of the Absorbers and New Evidence on Escape of Ionizing Radiation from Galaxies
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• The Line-of-Sight Proximity Effect and the Mass of Quasar Host Halos
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• Discovery of the Galaxy Proximity Effect and Implications for Measurements of the Ionizing Background Radiation at Low Redshifts
• Ionization of large-scale absorbing haloes and feedback events from high-redshift radio galaxies
• The Cosmic Baryon Fraction and the Extragalactic Ionizing Background
• Ionization history of the Universe as a test for Super Heavy Dark Matter particles
• Molecular Hydrogen in Damped Ly-alpha Systems: Spatial Distribution
• The line-of-sight proximity effect in individual quasar spectra
• Efficient adiabatic hydrodynamical simulations of the high-redshift intergalactic medium
• Suppression of Low-mass Galaxy Formation around Quasars at z~2-3
• Probing the environment of high-z quasars using the proximity effect in projected quasar pairs
• The Proximity Effect Around High Redshift Galaxies
• Spatially extended absorption around the z=2.63 radio galaxy MRC 2025-218: outflow or infall?
• The Gravitational Lensing in the QSO 1208+10 from the Proximity Effect in its Lyman alpha Forest
• Analysis of methods for detecting the proximity effect in quasar spectra
• Redshift distribution of {\bf Ly-$\alpha$} lines and metal systems
• Large scale environmental bias of the QSO line of sight proximity effect
• Environments around quasars at $z\sim$3 revealed by wide-field imaging with Subaru HSC and CFHT
• Spectral Signatures of Quasar Ages at z~3
• Constraining the ratio of median pixel optical depth profile around z ~ 4 quasars using the longitudinal proximity effect
• Intergalactic UV Background Radiation Field
• Evidence for overdensity around z_em > 4 quasars from the proximity effect
• Nature of the background ultraviolet radiation field