A CRASH simulation of the contribution of binary stars to the epoch of reionization

Abstract

We use a set of 3D radiative transfer simulations to study the effect that a large fraction of binary stars in galaxies during the epoch of reionization has on the physical properties of the intergalactic medium (i.e. the gas temperature and the ionization state of hydrogen and helium), on the topology of the ionized bubbles and on the 21 cm power spectra. Consistently to previous literature, we find that the inclusion of binary stars can speed up the reionization process of HI and HeI, while HeII reionization is still dominated by more energetic sources, especially accreting black holes. The earlier ionization attained with binary stars allows for more time for cooling and recombination, so that gas fully ionized by binary stars is typically colder than that ionized by single stars at any given redshift. With the same volume averaged ionization fraction, the inclusion of binary stars results in fewer small ionized bubbles and more large ones, with visible effects also on the large scales of the 21 cm power spectrum.

arXiv comment14 pages, 11 figures, MNRAS accepted

References in corpus (54)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Modeling feedback from stars and black holes in galaxy mergers
• UV Luminosity Functions at redshifts z~4 to z~10: 10000 Galaxies from HST Legacy Fields
• Observational constraints on Cosmic Reionization
• 21-cm Tomography of the Intergalactic Medium at High Redshift
• Reevaluating Old Stellar Populations
• Direct cosmological simulations of the growth of black holes and galaxies
• Reionization and Cosmology with 21 cm Fluctuations
• A Luminous Quasar at Redshift 7.642
• Reionization after Planck: The Derived Growth of the Cosmic Ionizing Emissivity now matches the Growth of the Galaxy UV Luminosity Density
• Stellar Population Effects on the Inferred Photon Density at Reionization
• The Reionization of the Universe by the First Stars and Quasars
• The MassiveBlack-II Simulation: The Evolution of Halos and Galaxies to z~0
• Radiation Backgrounds at Cosmic Dawn: X-Rays from Compact Binaries
• Multifrequency analysis of 21 cm fluctuations from the Era of Reionization
• Cold flows and the first quasars
• The SPHINX Cosmological Simulations of the First Billion Years: the Impact of Binary Stars on Reionization
• A Method for Separating the Physics from the Astrophysics of High-Redshift 21cm Fluctuations
• Fluctuating feedback-regulated escape fraction of ionizing radiation in low-mass, high-redshift galaxies
• The First Billion Years Project: The escape fraction of ionizing photons in the epoch of reionization
• X-ray emission from star-forming galaxies - II. Hot interstellar medium
• Signatures of X-rays in the early Universe
• Mean Spectral Energy Distributions and Bolometric Corrections for Luminous Quasars
• Cosmological Reionization Around the First Stars: Monte Carlo Radiative Transfer
• Binary Stars Can Provide the "Missing Photons" Needed for Reionization
• No missing photons for reionization: moderate ionizing photon escape fractions from the FIRE-2 simulations
• The effect of stellar evolution uncertainties on the rest-frame ultraviolet stellar lines of CIV and HeII in high-redshift Lyman-break galaxies
• CRASH: a Radiative Transfer Scheme
• Redshift Space Distortion of the 21cm Background from the Epoch of Reionization I: Methodology Re-examined
• Binary Population Synthesis
• The impact of stars stripped in binaries on the integrated spectra of stellar populations
• Galaxy morphology, kinematics and clustering in a hydrodynamic simulation of a LambdaCDM universe
• The Epoch of IGM heating by early sources of X-rays
• Spatial fluctuations of the intergalactic temperature-density relation after hydrogen reionization
• The contribution from stars stripped in binaries to cosmic reionization of hydrogen and helium
• Modelling the observed luminosity function and clustering evolution of Lyman-$\alpha$ emitters: growing evidence for late reionization
• Large scale simulations of H and He reionization and heating driven by stars and more energetic sources
• Evaluating the QSO contribution to the 21-cm signal from the Cosmic Dawn
• Faint-end Quasar Luminosity Functions from Cosmological Hydrodynamic Simulations
• CRASH3: cosmological radiative transfer through metals
• The Concerted Impact of Galaxies and QSOs on the Ionization and Thermal State of the Intergalactic Medium
• A Census of the LyC Photons that Form the UV Background During Reionization
• Improving $z\sim 7-11$ Galaxy Property Estimates with JWST/NIRCam Medium-Band Photometry
• Radiative transfer of ionizing radiation through gas and dust: stellar source case
• X-ray ionization of the intergalactic medium by quasars
• Delayed Photons from Binary Evolution Help Reionize the Universe
• X-ray background and its correlation with the 21 cm signal
• Investigating X-ray sources during the epoch of reionization with the 21 cm signal
• Cross-correlation between the 21-cm signal and [OIII] emitters during early cosmic reionization
• The effects of binary stars on galaxies and metal-enriched gas during reionization
• Opening Reionization: Quantitative Morphology of the Epoch of Reionization and Its Connection to the Cosmic Density Field
• Observing the redshifted 21 cm signal around a bright QSO at $z\sim 10$
• Enabling Radiative Transfer on AMR grids in CRASH
• Spectral Signatures of Population III and Envelope-stripped Stars in Galaxies at the Epoch of Reionization

Cited by in corpus (4)

• The THESAN project: ionizing escape fractions of reionization-era galaxies
• SPICE: the connection between cosmic reionisation and stellar feedback in the first galaxies
• Ionizing photon production and escape fractions during cosmic reionization in the TNG50 simulation
• Gravitational waves from mergers of Population III binary black holes: roles played by two evolution channels