Adding Context to JWST Surveys with Current and Future 21cm Radio Observations

Abstract

Infrared and radio observations of the Epoch of Reionization promise to revolutionize our understanding of the cosmic dawn, and major efforts with the JWST, MWA and HERA are underway. While measurements of the ionizing sources with infrared telescopes and the effect of these sources on the intergalactic medium with radio telescopes \emph{should} be complementary, to date the wildly disparate angular resolutions and survey speeds have made connecting proposed observations difficult. In this paper we develop a method to bridge the gap between radio and infrared studies. While the radio images may not have the sensitivity and resolution to identify individual bubbles with high fidelity, by leveraging knowledge of the measured power spectrum we are able to separate regions that are likely ionized from largely neutral, providing context for the JWST observations of galaxy counts and properties in each. By providing the ionization context for infrared galaxy observations, this method can significantly enhance the science returns of JWST and other infrared observations.

8 pages, 8 figures, accepted to ApJ; updated with accepted version. Text clarifications and updated references

References in corpus (8)

• The James Webb Space Telescope
• A luminous quasar at a redshift of z = 7.085
• The End of the Reionization Epoch Probed by Ly-alpha Emitters at z=6.5 in the Subaru Deep Field
• The Epoch of Reionization Window: I. Mathematical Formalism
• The Epoch of Reionization Window: II. Statistical Methods for Foreground Wedge Reduction
• Detecting the Rise and Fall of 21 cm Fluctuations with the Murchison Widefield Array
• The Scale of the Problem : Recovering Images of Reionization with GMCA
• Probing Reionization with the 21 cm-Galaxy Cross Power Spectrum

Cited by in corpus (18)

• 21CMMC: an MCMC analysis tool enabling astrophysical parameter studies of the cosmic 21 cm signal
• First Season MWA EoR Power Spectrum Results at Redshift 7
• Line-Intensity Mapping: 2017 Status Report
• The Global 21-cm Signal in the Context of the High-z Galaxy Luminosity Function
• Emulation of reionization simulations for Bayesian inference of astrophysics parameters using neural networks
• Implicit Likelihood Inference of Reionization Parameters from the 21 cm Power Spectrum
• Epoch of Reionisation 21cm Forecasting From MCMC-Constrained Semi-Numerical Models
• Hydrogen Epoch of Reionization Array (HERA) Phase II Deployment and Commissioning
• Contamination of the Epoch of Reionization power spectrum in the presence of foregrounds
• Probing ultra-light axions with the 21-cm Signal during Cosmic Dawn
• Deep learning approach for identification of HII regions during reionization in 21-cm observations -- II. foreground contamination
• Bayesian Model Selection with Future 21cm Observations of The Epoch of Reionisation
• Machine-learning recovery of foreground wedge-removed 21-cm light cones for high-$z$ galaxy mapping
• Probing Compensated Isocurvature with the 21-cm Signal during Cosmic Dawn
• Cosmological 21cm line observations to test scenarios of super-Eddington accretion on to black holes being seeds of high-redshifted supermassive black holes
• Foreground and sensitivity analysis for broad band (2D) 21cm--Ly-alpha and 21cm--H-alpha correlation experiments probing the Epoch of Reionization
• Calibrating excursion set reionization models to approximately conserve ionizing photons
• An Alcock-Paczynski Test on Reionization Bubbles for Cosmology