activity
20182025
most citedThe short ionizing photon mean free path at z=6 in Cosmic Dawn III, a new fully-coupled radiation-hydrodynamical simulation of the Epoch of Reionization

60 citations · 344 across the 14 of their papers we have counts for

collaborators

14 papers

astro-ph.GA2025★ 2 cited

Line Intensity Mapping Prediction from the Cosmic Dawn (CoDa) III Simulation for H from Galaxies and the Intergalactic Medium during the Epoch of Reionization

Eugene Hyeonmin Lee, Joohyun Lee, Paul R. Shapiro +13

The evolution of large-scale structure, galaxies and the intergalactic medium (IGM) during the Epoch of Reionization (EoR) can be probed by upcoming Line Intensity Mapping (LIM) ex…

astro-ph.CO2024★ 2 cited

Dispersion Measures of Fast Radio Bursts through the Epoch of Reionization

Joshua J. Ziegler, Paul R. Shapiro, Taha Dawoodbhoy +13

Dispersion measures (DM) of fast radio bursts (FRBs) probe the density of electrons in the intergalactic medium (IGM) along their lines-of-sight, including the average density vers…

astro-ph.GA2024★ 3 cited

Dust-UV offsets in high-redshift galaxies in the Cosmic Dawn III simulation

Pierre Ocvirk, Joseph S. W. Lewis, Luke Conaboy +13

Recent observations have revealed puzzling spatial disparities between ALMA dust continuum and UV emission as seen by HST and JWST in galaxies at (e.g. ALPINE and REBELS su…

astro-ph.CO2023★ 5 cited

Cosmic Variance and the Inhomogeneous UV Luminosity Function of Galaxies During Reionization

Taha Dawoodbhoy, Paul R. Shapiro, Pierre Ocvirk +8

When the first galaxies formed and starlight escaped into the intergalactic medium to reionize it, galaxy formation and reionization were both highly inhomogeneous in time and spac…

astro-ph.CO2022★ 12 cited

Reionization time of the Local Group and Local-Group-like halo pairs

Jenny G. Sorce, Pierre Ocvirk, Dominique Aubert +7

Patchy cosmic reionization resulted in the ionizing UV background asynchronous rise across the Universe. The latter might have left imprints visible in present day observations. Se…

astro-ph.CO2022★ 4 cited

Scattering of Lyα Photons through the Reionizing Intergalactic Medium: I. Spectral Energy Distribution

Hyunbae Park, Hyo Jeong Kim, Kyungjin Ahn +7

During reionization, a fraction of galactic Ly emission is scattered in the intergalactic medium (IGM) and appears as a diffuse light extending megaparsecs from the source. We i…

astro-ph.CO2022★ 60 cited

The short ionizing photon mean free path at z=6 in Cosmic Dawn III, a new fully-coupled radiation-hydrodynamical simulation of the Epoch of Reionization

Joseph S. W. Lewis, Pierre Ocvirk, Jenny G. Sorce +13

Recent determinations of the mean free path of ionising photons (mfp) in the intergalactic medium (IGM) at are lower than many theoretical predictions. To gain insight in…

astro-ph.CO2021★ 33 cited

Cosmological structure formation in scalar field dark matter with repulsive self-interaction: The Incredible Shrinking Jeans Mass

Paul R. Shapiro, Taha Dawoodbhoy, Tanja Rindler-Daller

Scalar Field Dark Matter (SFDM) comprised of ultralight ( eV) bosons is an alternative to standard, collisionless Cold Dark Matter (CDM) that is CDM-like on large…

astro-ph.GA2021★ 35 cited

Crucial Factors for Lyα Transmission in the Reionizing Intergalactic Medium: Infall Motion, HII Bubble Size, and Self-shielded Systems

Hyunbae Park, Intae Jung, Hyunmi Song +7

Using the CoDa II simulation, we study the Ly transmissivity of the intergalactic medium (IGM) during reionization. At , a typical galaxy without an active galactic nucleus…

astro-ph.CO2021★ 40 cited

Core-Envelope Haloes in Scalar Field Dark Matter with Repulsive Self-Interaction: Fluid Dynamics Beyond the de Broglie Wavelength

Taha Dawoodbhoy, Paul R. Shapiro, Tanja Rindler-Daller

Scalar Field Dark Matter (SFDM) comprised of ultralight bosons has attracted great interest as an alternative to standard, collisionless Cold Dark Matter (CDM) because of its novel…

astro-ph.GA2020★ 35 cited

Lyman-alpha transmission properties of the intergalactic medium in the CoDaII simulation

Max Gronke, Pierre Ocvirk, Charlotte Mason +10

The decline in abundance of Lyman- (Ly) emitting galaxies at is a powerful and commonly used probe to constrain the progress of cosmic reionization. We use the…

astro-ph.GA2020★ 53 cited

Galactic ionising photon budget during the Epoch of Reionisation in the Cosmic Dawn II simulation

Joseph S. W. Lewis, Pierre Ocvirk, Dominique Aubert +10

Cosmic Dawn ("CoDa") II yields the first statistically-meaningful determination of the relative contribution to reionization by galaxies of different halo mass, from a fully-couple…

astro-ph.GA2018★ 2 cited

Cosmic Dawn II (CoDa II): a new radiation-hydrodynamics simulation of the self-consistent coupling of galaxy formation and reionization

Pierre Ocvirk, Dominique Aubert, Jenny G. Sorce +10

Cosmic Dawn II (CoDa II) is a new, fully-coupled radiation-hydrodynamics simulation of cosmic reionization and galaxy formation and their mutual impact, to redshift . With $…

astro-ph.CO2018★ 58 cited

Suppression of Star Formation in Low-Mass Galaxies Caused by the Reionization of their Local Neighborhood

Taha Dawoodbhoy, Paul R. Shapiro, Pierre Ocvirk +10

Photoheating associated with reionization suppressed star formation in low-mass galaxies. Reionization was inhomogeneous, however, affecting different regions at different times. T…