A Measurement of Small Scale Structure in the 2.2 < z < 4.2 Lyman-alpha Forest (2009)
Lidz, Adam, Dall'Aglio, Aldo, McQuinn, Matthew, Fechner, Cora, Zaldarriaga, Matias, ...
The amplitude of fluctuations in the Ly-a forest on small spatial scales is sensitive to the temperature of the IGM and its spatial fluctuations. The temperature of the IGM and its spatial variations...
Redshifted intergalactic 3He+ 8.7 GHz hyperfine absorption (2009)
McQuinn, Matthew, Switzer, Eric R.
Motivated by recent interest in redshifted 21 cm emission of intergalactic hydrogen, we investigate the 8.7 GHz ^2S_{1/2} F=0-1 hyperfine transition of ^3He^+. We show that this transition is a...
The Implications of Gunn-Peterson Troughs in the HeII Lyman-alpha Forest (2009)
Many experts believe that the z ~ 3 HeII Ly-alpha forest will suffer from the same saturation issues as the z ~ 6 HI Ly-alpha forest and, therefore, will not be a sensitive probe of HeII...
In Situ Probes of the First Galaxies and Reionization: Gamma-ray Bursts (2009)
McQuinn, Matthew, Bloom, Joshua S., Grindlay, Jonathan, Band, David, Barthelmy, S. D., Berger, E., ...
The first structures in the Universe formed at z>7, at higher redshift than all currently known galaxies. Since GRBs are brighter than other cosmological sources at high redshift and exhibit simple...
Cosmology from the Highly-Redshifted 21 cm Line (2009)
Furlanetto, Steven, Lidz, Adam, Loeb, Abraham, McQuinn, Matthew, Pritchard, Jonathan, Shapiro, Paul, ...
One of the next decade's most exciting prospects is to explore the cosmic "dark ages," during which the first stars in the Universe formed, with the 21 cm line of neutral hydrogen. At z>6, this light...
Astrophysics from the Highly-Redshifted 21 cm Line (2009)
Furlanetto, Steven, Lidz, Adam, Loeb, Abraham, McQuinn, Matthew, Pritchard, Jonathan, Aguirre, James, ...
The cosmic dark ages and the epoch of reionization, during which the first generations of stars and galaxies formed, are among the most compelling frontiers of extragalactic astrophysics and...
HeII Reionization and its Effect on the IGM (2008)
McQuinn, Matthew, Lidz, Adam, Zaldarriaga, Matias, Hernquist, Lars, Hopkins, Philip F., Dutta, Suvendra, ...
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 reionized by quasars to...
Probing Reionization with the 21 cm-Galaxy Cross Power Spectrum (2008)
Lidz, Adam, Zahn, Oliver, Furlanetto, Steven, McQuinn, Matthew, Hernquist, Lars, Zaldarriaga, Matias
The cross-correlation between high redshift galaxies and 21 cm emission from the high redshift intergalactic medium (IGM) promises to be an excellent probe of the Epoch of Reionization (EoR). On...
How accurately can 21 cm tomography constrain cosmology? (2008)
Mao, Yi, Tegmark, Max, McQuinn, Matthew, Zaldarriaga, Matias, Zahn, Oliver
There is growing interest in using 3-dimensional neutral hydrogen mapping with the redshifted 21 cm line as a cosmological probe, as it has been argued to have a greater long-term potential than the...
Detecting the Rise and Fall of 21 cm Fluctuations with the Murchison Widefield Array (2007)
Lidz, Adam, Zahn, Oliver, McQuinn, Matthew, Zaldarriaga, Matias, Hernquist, Lars
We forecast the sensitivity with which the Murchison Widefield Array (MWA) can measure the 21 cm power spectrum of cosmic hydrogen, using radiative transfer simulations to model reionization and the...
Probing the Neutral Fraction of the IGM with GRBs during the Epoch of Reionization (2007)
McQuinn, Matthew, Lidz, Adam, Zaldarriaga, Matias, Hernquist, Lars, Dutta, Suvendra
We show that near-infrared observations of the red side of the Ly-alpha line from a single gamma ray burst (GRB) afterglow cannot be used to constrain the global neutral fraction of the intergalactic...
Studying Reionization with Ly-alpha Emitters (2007)
McQuinn, Matthew, Hernquist, Lars, Zaldarriaga, Matias, Dutta, Suvendra
We show that observations of high-redshift Ly-alpha emitters (LAEs) have the potential to provide definitive evidence for reionization in the near future. Using 200 Mpc radiative transfer...
Quasar Proximity Zones and Patchy Reionization (2007)
Lidz, Adam, McQuinn, Matthew, Zaldarriaga, Matias, Hernquist, Lars, Dutta, Suvendra
Lyman-alpha forest absorption spectra towards quasars at z ~ 6 show regions of enhanced transmission close to their source. Several authors have argued that the apparently small sizes of these...
The morphology of HII regions during reionization (2006)
McQuinn, Matthew, Lidz, Adam, Zahn, Oliver, Dutta, Suvendra, Hernquist, Lars, Zaldarriaga, Matias
It is possible that the properties of HII regions during reionization depend sensitively on many poorly constrained quantities (the nature of the ionizing sources, the clumpiness of the gas in the...
Higher Order Contributions to the 21 cm Power Spectrum (2006)
Lidz, Adam, Zahn, Oliver, McQuinn, Matthew, Zaldarriaga, Matias, Dutta, Suvendra, Hernquist, Lars
We consider the contribution of 3rd and 4th order terms to the power spectrum of 21 cm brightness temperature fluctuations during the epoch of reionization, which arise because the 21 cm brightness...
Simulations and Analytic Calculations of Bubble Growth During Hydrogen Reionization (2006)
Zahn, Oliver, Lidz, Adam, McQuinn, Matthew, Dutta, Suvendra, Hernquist, Lars, Zaldarriaga, Matias, ...
We present results from a large volume simulation of Hydrogen reionization. We combine 3d radiative transfer calculations and an N-body simulation, describing structure formation in the intergalactic...
Cosmological Parameter Estimation Using 21 cm Radiation from the Epoch of Reionization (2005)
McQuinn, Matthew, Zahn, Oliver, Zaldarriaga, Matias, Hernquist, Lars, Furlanetto, Steven R.
A number of radio interferometers are currently being planned or constructed to observe 21 cm emission from reionization. Not only will such measurements provide a detailed view of that epoch, but,...
Characteristic Scales During Reionization (2005)
Furlanetto, Steven R., McQuinn, Matthew, Hernquist, Lars
One of the key observables of the reionization era is the distribution of neutral and ionized gas. Recently, Furlanetto, Zaldarriaga, & Hernquist developed a simple analytic model to describe the...
The Kinetic Sunyaev-Zel'dovich Effect from Reionization (2005)
McQuinn, Matthew, Furlanetto, Steven R., Hernquist, Lars, Zahn, Oliver, Zaldarriaga, Matias
During the epoch of reionization, local variations in the ionized fraction (patchiness) imprint arcminute-scale temperature anisotropies in the CMB through the kinetic Sunyaev-Zel'dovich (kSZ)...
The influence of non-uniform reionization on the CMB (2005)
Zahn, Oliver, Zaldarriaga, Matias, Hernquist, Lars, McQuinn, Matthew
We investigate the impact of spatial variations in the ionized fraction during reionization on temperature anisotropies in the CMB. We combine simulations of large scale structure to describe the...