The effect of ionizing background fluctuations on the spatial correlations of high redshift Ly$\alpha$-emitting galaxies

Abstract

We investigate the possible influence of fluctuations in the metagalactic photoionizing ultra-violet background (UVBG) on the clustering of Ly$\alpha$-emitting galaxies through the modulation of the ionization level of the gas surrounding the systems. At redshifts $z>5$, even when assuming the reionization of the intergalactic medium has completed, the fluctuations are sufficiently large that they may non-negligibly enhance, and possibly even dominate, the angular correlation function on scales up to a few hundred arcsecs. Whilst a comparison with observations at $z\sim 5.7$ is statistically consistent with no influence of UVBG fluctuations, allowing for the fluctuations opens up the range of acceptable models to include those with relatively low bias factors for the Ly$\alpha$-emitting galaxies. In this case, the evolution in the bias factor of Ly$\alpha$-emitters over the approximate redshift range $3<z<7$ corresponds to a nearly constant halo mass for Ly$\alpha$-emitting galaxies of $\sim 10^{10.5}{M}_{\odot }$.

arXiv comment11 pages, 8 figures; accepted for publication in MNRAS

References in corpus (49)

• emcee: The MCMC Hammer
• UV Luminosity Functions at redshifts z~4 to z~10: 10000 Galaxies from HST Legacy Fields
• Statistics of 207 Lya Emitters at a Redshift Near 7: Constraints on Reionization and Galaxy Formation Models
• The Subaru/XMM-Newton Deep Survey (SXDS). IV. Evolution of Lya Emitters from z=3.1 to 5.7 in the 1 deg^2 Field: Luminosity Functions and AGN
• 3D Lyman-alpha radiation transfer. I. Understanding Lyman-alpha line profile morphologies
• Evidence of patchy hydrogen reionization from an extreme Ly$\alpha$ trough below redshift six
• The Universe is Reionizing at z~7: Bayesian Inference of the IGM Neutral Fraction Using Ly$\alpha$ Emission from Galaxies
• The Physics of the Intergalactic Medium
• Lyman Alpha Radiation From Collapsing Protogalaxies I: Characteristics of the Emergent Spectrum
• Hydrogen reionisation ends by $z=5.3$: Lyman-$\alpha$ optical depth measured by the XQR-30 sample
• Linear Redshift Distortions: A Review
• Large Lyman-alpha opacity fluctuations and low CMB tau in models of late reionization with large islands of neutral hydrogen extending to z<5.5
• Subaru Deep Survey II. Luminosity Functions and Clustering Properties of Lya Emitters at z=4.86 in the Subaru Deep Field
• Studying Reionization with Ly-alpha Emitters
• Evolution of the AGN UV luminosity function from redshift 7.5
• Systematic Identification of LAEs for Visible Exploration and Reionization Research Using Subaru HSC (SILVERRUSH). I. Program Strategy and Clustering Properties of ~2,000 Lya Emitters at z=6-7 over the 0.3-0.5 Gpc${}^2$ Survey Area
• Observations of the Lyman-$\alpha$ Universe
• New constraints on Lyman-α opacity with a sample of 62 quasars at z > 5.7
• The Giant Gemini GMOS survey of z>4.4 quasars - I. Measuring the mean free path across cosmic time
• Intergalactic Transmission and its Impact on the Lyα Line
• Long troughs in the Lyman-$\alpha$ forest below redshift 6 due to islands of neutral hydrogen
• The mean free path of ionizing photons at 5 < z < 6: evidence for rapid evolution near reionization
• Lyman-alpha emission properties of simulated galaxies: interstellar medium structure and inclination effects
• The Detectability of Lyman Alpha Emission from Galaxies during the Epoch of Reionization
• Detection of Lyman-alpha Emitting Galaxies at Redshift z=4.55
• Definitive Identification of the Transition between Small- to Large-Scale Clustering for Lyman Break Galaxies
• Measurements of the z ~ 6 Intergalactic Medium Optical Depth and Transmission Spikes Using a New z > 6.3 Quasar Sample
• Recovering the systemic redshift of galaxies from their Lyman-alpha line profile
• Clustering of quasars in SDSS-IV eBOSS : study of potential systematics and bias determination
• The Effects of Reionization on Lyman-alpha Galaxy Surveys
• Observing the tail of reionization: neutral islands in the $z=5.5$ Lyman-$\alpha$ Forest
• First spectroscopic measurements of [OIII] emission from Lyman-alpha selected field galaxies at z ~ 3.1
• Evidence for Large-Scale Fluctuations in the Metagalactic Ionizing Background Near Redshift Six
• Radiative Transfer Modeling of Lyman Alpha Emitters. II. New Effects in Galaxy Clustering
• Effect of the intergalactic environment on the observability of Ly-alpha emitters during reionization
• The VLT LBG Redshift Survey - III. The clustering and dynamics of Lyman-break galaxies at z ~ 3
• Scale-dependent bias in the BAO-scale intergalactic neutral hydrogen
• On the effect of the ionising background on the Lyα forest autocorrelation function
• CHORUS II. Subaru/HSC Determination of the Ly$\alpha$ Luminosity Function at $z=7.0$: Constraints on Cosmic Reionization Model Parameter
• Lyman-alpha emitters gone missing: the different evolution of the bright and faint populations
• Spectral shapes of the Lyman-alpha emission from galaxies: I. blueshifted emission and intrinsic invariance with redshift
• The Stellar Mass, Star Formation Rate and Dark Matter Halo Properties of LAEs at $z\sim 2$
• SILVERRUSH XI: Constraints on the Ly$\alpha$ luminosity function and cosmic reionization at $z=7.3$ with Subaru/Hyper Suprime-Cam
• Non-Gravitational Contributions to the Clustering of Ly-alpha Selected Galaxies: Implications for Cosmological Surveys
• The influence of metagalactic ultra-violet background fluctuations on the high-redshift Ly$\alpha$ forest
• Lyman-alpha emitters in a cosmological volume II: the impact of the intergalactic medium
• Radiative Transfer Distortions of Lyman-$\alpha$ Emitters: a New Fingers-of-God Damping in the Clustering in Redshift Space
• Time-dependent fluctuations in the metagalactic photoionization background
• Large-scale fluctuations in the cosmic ionising background: the impact of beamed source emission

Cited by in corpus (2)

• Probing Large Scale Ionizing Background Fluctuation with Lyman $\alpha$ Forest and Galaxy Cross-correlation at z=2.4
• The effect of helium reionization on the Lyman-alpha forest hydrogen flux statistics