710 citations · 1.8k across the 9 of their papers we have counts for
11 papers
A New Calculation of the Ionizing Background Spectrum and the Effects of HeII Reionization
C. -A. Faucher-Giguere, A. Lidz, M. Zaldarriaga +1
The ionizing background determines the ionization balance and the thermodynamics of the cosmic gas. It is therefore a fundamental ingredient to theoretical and empirical studies of…
Evolution of the Intergalactic Opacity: Implications for the Ionizing Background, Cosmic Star Formation, and Quasar Activity
C. -A. Faucher-Giguere, A. Lidz, L. Hernquist +1
We investigate the implications of the intergalactic opacity for the evolution of the cosmic UV luminosity density and its sources. Our main constraint is our measurement of the Ly…
A Flat Photoionization Rate at 2<z<4.2: Evidence for a Stellar-Dominated UV Background and Against a Decline of Cosmic Star Formation Beyond z~3
C. -A. Faucher-Giguere, A. Lidz, L. Hernquist +1
We investigate the implications of our measurement of the Lyman-alpha forest opacity at redshifts 2<z<4.2 from a sample of 86 high-resolution quasar spectra for the evolution of th…
HeII Reionization and its Effect on the IGM
Matthew McQuinn, Adam Lidz, Matias Zaldarriaga +4
Observations of the intergalactic medium (IGM) suggest that quasars reionize HeII in the IGM at z ~ 3. We have run a set of 190 and 430 comoving Mpc simulations of HeII being reion…
An Eccentric Binary Millisecond Pulsar in the Galactic Plane
D. J. Champion, S. M. Ransom, P. Lazarus +28
Binary pulsar systems are superb probes of stellar and binary evolution and the physics of extreme environments. In a survey with the Arecibo telescope, we have found PSR J1903+032…
Numerical Simulations Unravel the Cosmic Web
C. -A. Faucher-Giguere, A. Lidz, L. Hernquist
The universe is permeated by a network of filaments, sheets, and knots collectively forming a "cosmic web.'' The discovery of the cosmic web, especially through its signature of ab…