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...
CMBPol Mission Concept Study: Reionization Science with the Cosmic Microwave Background (2008)
Zaldarriaga, Matias, Colombo, Loris, Komatsu, Eiichiro, Lidz, Adam, Mortonson, Michael, Oh, S. Peng, ...
We summarize existing constraints on the epoch of reionization and discuss the observational probes that are sensitive to the process. We focus on the role large scale polarization can play....
On the Detectability of the Hydrogen 3-cm Fine Structure Line from the EoR (2008)
Dijkstra, Mark, Lidz, Adam, Pritchard, Jonathan R., Greenhill, Lincoln J., Mitchell, D. A., Ord, S. M., ...
A soft ultraviolet radiation field, 10.2 eV < E 2p_3/2) against the Cosmic Microwave Background out to very high redshifts. In particular, the optical depth in the fine-structure line through...
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...
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...
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 Impact of The IGM on High-Redshift Lyman Alpha Emission Lines (2007)
Dijkstra, Mark, Lidz, Adam, Wyithe, Stuart
We calculate the impact of the intergalactic medium (IGM) on the observed Lyman alpha lines (hereafter Lya) emitted by galaxies in an ionised IGM at z>4. Our model accounts for gas clumping in the...
The Co-Formation of Spheroids and Quasars Traced in their Clustering (2006)
Hopkins, Philip F., Lidz, Adam, Hernquist, Lars, Coil, Alison L., Myers, Adam D., Cox, Thomas J., ...
We compare observed clustering of quasars and galaxies as a function of redshift, mass, luminosity, & color/morphology, to constrain models of quasar fueling and spheroid-BH co-evolution. High...
The Cross-Correlation of High-Redshift 21 cm and Galaxy Surveys (2006)
Furlanetto, Steven, Lidz, Adam
We study the detectability of the cross-correlation between 21 cm emission from the intergalactic medium and the galaxy distribution during (and before) reionization. We show that first-generation 21...
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...
Have We Detected Patchy Reionization in Quasar Spectra? (2005)
Lidz, Adam, Oh, S. Peng, Furlanetto, Steven R.
The Lyman-alpha forest at z >~ 5.5 shows strong scatter in the mean transmission even when smoothed over very large spatial scales, >~ 50 Mpc/h. This has been interpreted as a signature of strongly...
The Impact of Temperature Fluctuations on the Lyman-alpha Forest Power Spectrum (2005)
Lai, Kamson, Lidz, Adam, Hernquist, Lars, Zaldarriaga, Matias
We explore the impact of spatial fluctuations in the intergalactic medium temperature on the Lyman-alpha forest flux power spectrum near z ~ 3. We develop a semianalytic model to examine temperature...
The Luminosity Dependence of Quasar Clustering (2005)
Lidz, Adam, Hopkins, Philip F., Cox, Thomas J., Hernquist, Lars, Robertson, Brant
We investigate the luminosity dependence of quasar clustering, inspired by numerical simulations of galaxy mergers that incorporate black hole growth. These simulations have motivated a new...
Lidz, Adam, Heitmann, Katrin, Hui, Lam, Habib, Salman, Rauch, Michael, Sargent, Wallace L. W.
The analysis of the Lyman-alpha forest of absorption lines in quasar spectra has emerged as a potentially powerful technique to constrain the linear matter power spectrum. In most previous work, the...
Cosmology with the Lyman-alpha forest (2004)
In this thesis we use the gravitational instability model of the Lyα forest to obtain constraints on cosmology. First, we constrain the neutral fraction of hydrogen at z ∼ 6, using measurements of...
Towards Constraints on Dark Energy from Absorption Spectra of Close Quasar Pairs (2003)
Lidz, Adam, Hui, Lam, Crotts, Arlin P. S., Zaldarriaga, Matias
A comparison between the line of sight power spectrum of absorption in the Lyman-alpha forest and the cross power spectrum between the absorption in neighboring lines of sight offers an...
Beyond Lyman-alpha: Constraints and Consistency Tests from the Lyman-beta Forest (2003)
Dijkstra, Mark, Lidz, Adam, Hui, Lam
Absorption between the rest-frame wavelengths of 973 and 1026 Angstroms in quasar spectra arises from two sources (apart from occasional metals): one is due to Lyman-alpha (Lya) absorption by...
The first data release of the sloan digital sky survey (2003)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...
The first data release of the sloan digital sky survey (2003)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...
The first data release of the Sloan Digital Sky Survey (2003)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...
The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its First Data Release. This consists of 2099 deg2 of five-band (u, g, r, i, z) imaging data, 186,240 spectra of...
How Neutral is the Intergalactic Medium at z ~ 6? (2001)
Lidz, Adam, Hui, Lam, Zaldarriaga, Matias, Scoccimarro, Roman
Recent observations of high redshift quasar spectra reveal long gaps with little flux. A small or no detectable flux does not by itself imply the intergalactic medium (IGM) is neutral. Inferring the...