# Ly α as a tracer of cosmic reionization in the SPHINX radiation-hydrodynamics cosmological simulation

@inproceedings{Garel2021LyA,
title={Ly $\alpha$ as a tracer of cosmic reionization in the SPHINX radiation-hydrodynamics cosmological simulation},
author={Thibault Garel and J{\'e}r{\'e}my Blaizot and Joakim Rosdahl and L'eo Michel-Dansac and Martin G. Haehnelt and Harley Katz and Taysun Kimm and Anne Verhamme},
year={2021}
}
• Published 7 April 2021
• Physics
The Lyα emission line is one of the most promising probes of cosmic reionisation but isolating the signature of a change in the ionisation state of the IGM is challenging because of intrinsic evolution and internal radiation transfer effects. We present the first study of the evolution of Lyα emitters (LAE) during the epoch of reionisation based on a full radiation-hydrodynamics cosmological simulation that is able to capture both the large-scale process of reionisation and the small-scale…

## Figures from this paper

Constraining Galaxy Overdensities around Three z ∼ 6.5 Quasars with ALMA and MUSE
• Physics
The Astrophysical Journal
• 2022
We quantify galaxy overdensities around three high-redshift quasars with known [C ii]158 μm companions: PJ231–20 (z = 6.59), PJ308–21 (z = 6.24), and J0305–3150 (z = 6.61). Recent SCUBA2 imaging
Simulating Jellyfish Galaxies: A Case Study for a Gas-rich Dwarf Galaxy
• Physics
The Astrophysical Journal
• 2022
We investigate the formation of jellyfish galaxies using radiation-hydrodynamic simulations of gas-rich dwarf galaxies with a multiphase interstellar medium (ISM). We find that the
A Systematic Study of the Escape of LyC and Lyα Photons from Star-forming, Magnetized Turbulent Clouds
• Physics
The Astrophysical Journal Supplement Series
• 2022
Understanding the escape of Lyman continuum (LyC) and Lyα photons from giant molecular clouds (GMCs) is crucial if we are to study the reionization of the universe and to interpret spectra of
SILVERRUSH. XII. Intensity Mapping for Lyα Emission Extending over 100–1000 Comoving Kpc around z ∼ 2−7 LAEs with Subaru HSC-SSP and CHORUS Data
• Physics
The Astrophysical Journal
• 2022
We conduct intensity mapping to probe for extended diffuse Lyα emission around Lyα emitters (LAEs) at z ∼2−7, exploiting very deep (∼26 mag at 5σ) and large-area (∼4.5 deg2) Subaru/Hyper Suprime-Cam
Crucial Factors for Lyα Transmission in the Reionizing Intergalactic Medium: Infall Motion, H ii Bubble Size, and Self-shielded Systems
• Physics
The Astrophysical Journal
• 2021
Using the CoDa II simulation, we study the Lyα transmissivity of the intergalactic medium (IGM) during reionization. At z > 6, a typical galaxy without an active galactic nucleus fails to form a
Introducing SPHINX-MHD: the impact of primordial magnetic fields on the first galaxies, reionization, and the global 21-cm signal
• Physics
• 2021
We present the first results from SPHINX-MHD, a suite of cosmological radiation-magnetohydrodynamics simulations designed to study the impact of primordial magnetic fields (PMFs) on galaxy formation

## References

SHOWING 1-10 OF 135 REFERENCES
Saas-Fee Lecture Notes: Physics of Lyman Alpha Radiative Transfer
Lecture notes for 8 lectures on the `Physics of Lyman alpha Radiative Transfer', given at the 46th Saas-Fee winter school held in Les Diablerets, Switzerland on March 13-19 2016. These lectures aimed
• MNRAS,
• 2013
Tracing the simulated high-redshift circum-galactic medium with Lyman alpha emission
• Physics
• 2020
With the Multi Unit Spectroscopic Explorer (MUSE), it is now possible to detect spatially extended Lyman α (Lyα) emission from individual faint (MUV ∼ −18) galaxies at redshifts, 3 < z < 6, tracing
The MUSE Extremely Deep Field: The cosmic web in emission at high redshift
• Physics
Astronomy & Astrophysics
• 2021
We report the discovery of diffuse extended Lyα emission from redshift 3.1 to 4.5, tracing cosmic web filaments on scales of 2.5−4 cMpc. These structures have been observed in overdensities of Lyα
Can Galaxy Evolution Mimic Cosmic Reionization?
• Physics
• 2020
Lyα emitting galaxies are powerful tools to probe the late stages of cosmic reionization. The observed sudden drop in Lyα fraction at z > 6 is often interpreted as a sign of reionization, since the
Texas Spectroscopic Search for Lyα Emission at the End of Reionization. III. The Lyα Equivalent-width Distribution and Ionized Structures at z > 7
• Physics
• 2020
Ly$\alpha$ emission from galaxies can be utilized to characterize the ionization state in the intergalactic medium (IGM). We report our search for Ly$\alpha$ emission at $z>7$ using a comprehensive
Spectral Shapes of the Lyα Emission from Galaxies. I. Blueshifted Emission and Intrinsic Invariance with Redshift
• Physics
The Astrophysical Journal
• 2021
We demonstrate the redshift evolution of the spectral profile of H i Lyα emission from star-forming galaxies. In this first study we pay special attention to the contribution of blueshifted emission.
Lyman-α transmission properties of the intergalactic medium in the CoDaII simulation
• Physics
Monthly Notices of the Royal Astronomical Society
• 2021
The decline in abundance of Lyman-α (Lyα) emitting galaxies at z ≳ 6 is a powerful and commonly used probe to constrain the progress of cosmic reionization. We use the CoDaII simulation, which is a
Spectroscopically Confirmed Lyα Emitters from Redshift 5 to 7 behind 10 Galaxy Cluster Lenses
• Physics
• 2020
We present 36 spectroscopically confirmed intrinsically UV-faint Ly$\alpha$ emitting galaxies from follow-up observations with Keck/DEIMOS of gravitationally lensed high-redshift candidates.
RASCAS: RAdiation SCattering in Astrophysical Simulations
• Physics
Astronomy & Astrophysics
• 2020
Context. Resonant lines are powerful probes of the interstellar and circumgalactic medium of galaxies. Their transfer in gas being a complex process, the interpretation of their observational