Calibrating excursion set reionization models to approximately conserve ionizing photons
arXiv:2112.05184 · doi:10.1093/mnras/stac2756
Abstract
The excursion set reionization framework is widely used, due to its speed and accuracy in reproducing the 3D topology of reionization. However, it is known that it does not conserve photon number. Here, we introduce an efficient, on-the-fly recipe to approximately account for photon conservation. Using a flexible galaxy model shown to reproduce current high- observables, we quantify the bias in the inferred reionization history and galaxy properties resulting from the non-conservation of ionizing photons. Using a mock 21-cm observation, we perform inference with and without correcting for ionizing photon conservation. We find that ignoring photon conservation results in very modest biases in the inferred galaxy properties, for our fiducial model. The notable exception is in the power-law scaling of the ionizing escape fraction with halo mass, which can be biased from the true value by (corresponding to in the power-law index). Our scheme is implemented in the public code .
arXiv comment9 pages, 4 figures, 1 table, accepted for publication in MNRAS
References in corpus (78)
- Planck 2015 results. XIII. Cosmological parameters
- Large scale bias and the peak background split
- In the Beginning: The First Sources of Light and the Reionization of the Universe
- UV Luminosity Functions at redshifts z~4 to z~10: 10000 Galaxies from HST Legacy Fields
- UniverseMachine: The Correlation between Galaxy Growth and Dark Matter Halo Assembly from z=0-10
- 21cmFAST: A Fast, Semi-Numerical Simulation of the High-Redshift 21-cm Signal
- Equation of State of the Photoionized Intergalactic Medium
- The Growth of HII Regions During Reionization
- X-ray emission from star-forming galaxies - I. High-mass X-ray binaries
- The history of star formation in a LCDM universe
- Massloss of galaxies due to a UV-background
- Model-independent evidence in favor of an end to reionization by z~6
- On the evolution of the HI column density distribution in cosmological simulations
- Reionization of the Inhomogeneous Universe
- Efficient Simulations of Early Structure Formation and Reionization
- Reionization after Planck: The Derived Growth of the Cosmic Ionizing Emissivity now matches the Growth of the Galaxy UV Luminosity Density
- New Determinations of the UV Luminosity Functions from z~9 to z~2 show a remarkable consistency with halo growth and a constant star formation efficiency
- The Dearth of z~10 Galaxies in all HST Legacy Fields -- The Rapid Evolution of the Galaxy Population in the First 500 Myr
- What Next-Generation 21 cm Power Spectrum Measurements Can Teach Us About the Epoch of Reionization
- Simulations and Analytic Calculations of Bubble Growth During Hydrogen Reionization
- Concordance models of reionization: implications for faint galaxies and escape fraction evolution
- X-ray Binary Evolution Across Cosmic Time
- Inferring the astrophysics of reionization and cosmic dawn from galaxy luminosity functions and the 21-cm signal
- A redshift-independent efficiency model: star formation and stellar masses in dark matter halos at z>4
- 21CMMC: an MCMC analysis tool enabling astrophysical parameter studies of the cosmic 21 cm signal
- The z~6 Luminosity Function Fainter than -15 mag from the Hubble Frontier Fields: The Impact of Magnification Uncertainties
- Cosmic Dawn (CoDa): the First Radiation-Hydrodynamics Simulation of Reionization and Galaxy Formation in the Local Universe
- The First Billion Years Project: The escape fraction of ionizing photons in the epoch of reionization
- Galaxy Properties and UV Escape Fractions During Epoch of Reionization: Results from the Renaissance Simulations
- Comparison Of Reionization Models: Radiative Transfer Simulations And Approximate, Semi-Numeric Models
- New constraints on Lyman-α opacity with a sample of 62 quasars at z > 5.7
- Feedback-regulated star formation and escape of LyC photons from mini-haloes during reionisation
- Constraints on the Star Formation Efficiency of Galaxies During the Epoch of Reionization
- Inside-out or Outside-in: The topology of reionization in the photon-starved regime suggested by Lyman-alpha forest data
- Inhomogeneous recombinations during cosmic reionization
- Semi-analytic forecasts for JWST - I. UV luminosity functions at z = 4 - 10
- The signature of the first stars in atomic hydrogen at redshift 20
- A Simple Technique for Predicting High-Redshift Galaxy Evolution
- The Baryon Acoustic Oscillation Broadband and Broad-beam Array: Design Overview and Sensitivity Forecasts
- HERA Phase I Limits on the Cosmic 21-cm Signal: Constraints on Astrophysics and Cosmology During the Epoch of Reionization
- Fast Large Volume Simulations of the 21 cm Signal from the Reionization and pre-Reionization Epochs
- Essential physics of early galaxy formation
- 21cmFAST v3: A Python-integrated C code forgenerating 3D realizations of the cosmic 21cm signal
- Cosmic reionization after Planck
- GOLDRUSH. II. Clustering of Galaxies at Revealed with the Half-Million Dropouts Over the 100 deg Area Corresponding to 1 Gpc
- No missing photons for reionization: moderate ionizing photon escape fractions from the FIRE-2 simulations
- Dark-ages reionization and galaxy formation simulation - III. Modelling galaxy formation and the epoch of reionization
- Reionization and galaxy inference from the high-redshift Lyα forest
- Astraeus I: The interplay between galaxy formation and reionization
- 21 cm signal from cosmic dawn: Imprints of spin temperature fluctuations and peculiar velocities
- The Global History of Reionisation
- The influence of non-uniform reionization on the CMB
- How does radiative feedback from a UV background impact reionization?
- 21CMMC with a 3D light-cone: the impact of the co-evolution approximation on the astrophysics of reionisation and cosmic dawn
- Topology and Sizes of HII Regions during Cosmic Reionization
- Reionization optical depth determination from Planck HFI data with ten percent accuracy
- High Mass X-ray Binaries and the Cosmic 21-cm Signal: Impact of Host Galaxy Absorption
- On the use of semi-numerical simulations in predicting the 21-cm signal from the epoch of reionization
- The depletion of gas in high-redshift dwarf galaxies from an inhomogeneous reionization
- UV Radiative Feedback During the Advanced Stages of Reionization
- Interpreting LOFAR 21-cm signal upper limits at z~9.1 in the context of high-z galaxy and reionisation observations
- The Impact of a Percolating IGM on Redshifted 21 cm Observations of Quasar HII Regions
- The accuracy of semi-numerical reionization models in comparison with radiative transfer simulations
- Exploring reionisation and high-z galaxy observables with recent multi-redshift MWA upper limits on the 21-cm signal
- Connecting Reionization to the Local Universe
- Reionization Through the Lens of Percolation Theory
- Galactic ionising photon budget during the Epoch of Reionisation in the Cosmic Dawn II simulation
- A comparison of quasar emission reconstruction techniques for Lyman- and Lyman- transmission
- Photon number conservation and the large-scale 21 cm power spectrum in semi-numerical models of reionization
- On the faint-end of the high- galaxy luminosity function
- Adding Context to JWST Surveys with Current and Future 21cm Radio Observations
- Epoch of Reionisation 21cm Forecasting From MCMC-Constrained Semi-Numerical Models
- Properties of reionization-era galaxies from JWST luminosity functions and 21-cm interferometry
- An improved model of HII bubbles during the epoch of reionization
- Photon Number Conserving Models of H II Bubbles during Reionization
- ARTIST: Fast radiative transfer for large-scale simulations of the epoch of reionisation
- How feedback shapes galaxies: an analytic model
- A hybrid multi resolution scheme to efficiently model the structure of reionization on the largest scales