1.3k citations · 2.8k across the 23 of their papers we have counts for
12 papers · 1 filter
Improving IGM temperature constraints using wavelet analysis on high-redshift quasars
Molly Wolfson, Joseph F. Hennawi, Frederick B. Davies +3
The thermal state of the intergalactic medium (IGM) contains vital information about the epoch of reionization, one of the most transformative yet poorly understood periods in the…
HyPhy: Deep Generative Conditional Posterior Mapping of Hydrodynamical Physics
Benjamin Horowitz, Max Dornfest, Zarija Lukić +1
Generating large volume hydrodynamical simulations for cosmological observables is a computationally demanding task necessary for next generation observations. In this work, we con…
Fast, high-fidelity Lyman forests with convolutional neural networks
Peter Harrington, Mustafa Mustafa, Max Dornfest +2
Full-physics cosmological simulations are powerful tools for studying the formation and evolution of structure in the universe but require extreme computational resources. Here, we…
The Power Spectrum of the Lyman- Forest at z < 0.5
Vikram Khaire, Michael Walther, Joseph F. Hennawi +6
We present new measurements of the flux power-spectrum P(k) of the HI Lyman- forest spanning scales k ~ 0.001-0.1 s/km. These results were derived from 65 far ultraviole…
New Constraints on IGM Thermal Evolution from the Lyα Forest Power Spectrum
Michael Walther, Jose Oñorbe, Joseph F. Hennawi +1
We determine the thermal evolution of the intergalactic medium (IGM) over of cosmic time by comparing measurements of the Lyα forest power spectrum t…
Quantitative Constraints on the Reionization History from the IGM Damping Wing Signature in Two Quasars at z > 7
Frederick B. Davies, Joseph F. Hennawi, Eduardo Bañados +10
During reionization, neutral hydrogen in the intergalactic medium (IGM) imprints a damping wing absorption feature on the spectrum of high-redshift quasars. A detection of this sig…
A Detection of ~2.3 Cosmic Voids from 3D Lyman- Forest Tomography in the COSMOS Field
Alex Krolewski, Khee-Gan Lee, Martin White +10
We present the most distant detection of cosmic voids () and the first detection of three-dimensional voids in the Lyman- forest. We used a 3D tomographic map of the…
A New Method to Measure the Post-Reionization Ionizing Background from the Joint Distribution of Lyman- and Lyman- Forest Transmission
Frederick B. Davies, Joseph F. Hennawi, Anna-Christina Eilers +1
The amplitude of the ionizing background that pervades the intergalactic medium (IGM) at the end of the epoch of reionization provides a valuable constraint on the emissivity of th…
Self-Consistent Modeling of Reionization in Cosmological Hydrodynamical Simulations
Jose Oñorbe, Joseph F Hennawi, Zarija Lukić
The ultraviolet background (UVB) emitted by quasars and galaxies governs the ionization and thermal state of the intergalactic medium (IGM), regulates the formation of high-redshif…
Modeling the Lyman-alpha Forest in Collisionless Simulations
Daniele Sorini, José Oñorbe, Zarija Lukić +1
Cosmological hydrodynamic simulations can accurately predict the properties of the intergalactic medium (IGM), but only under the condition of retaining high spatial resolution nec…
Mass Function Predictions Beyond LCDM
Suman Bhattacharya, Katrin Heitmann, Martin White +3
The mass distribution of halos, as specified by the halo mass function, is a key input for several cosmological probes. The sizes of -body simulations are now such that, for the…
Galaxy Clusters as a probe of early dark energy
Ujjaini Alam, Zarija Lukić, Suman Bhattacharya
We study a class of early dark energy (EDE) models, in which, unlike in standard dark energy models, a substantial amount of dark energy exists in the matter-dominated era. We self…