443 citations · 7.7k across the 153 of their papers we have counts for
12 papers · 2 filters
IR Background Anisotropies in Spitzer GOODS images and constraints on first galaxies
Asantha Cooray, Ian Sullivan, Ranga-Ram Chary +6
We describe the angular power spectrum of unresolved 3.6 micron IR light in Spitzer GOODS fields. The amplitude of the anisotropy spectrum decreases with decreasing flux threshold…
Direct Reconstruction of the Dark Energy Scalar-Field Potential
Chao Li, Daniel E. Holz, Asantha Cooray
While the accelerated expansion of the Universe is by now well established, an underlying scalar field potential possibly responsible for this acceleration remains unconstrained. W…
WMAP-normalized Inflationary Model Predictions and the Search for Primordial Gravitational Waves with Direct Detection Experiments
Brett C. Friedman, Asantha Cooray, Alessandro Melchiorri
In addition to density perturbations, inflationary models of the early universe generally predict a stochastic background of gravitational waves or tensor fluctuations. By making u…
Solar System: Sifting through the debris
Asantha Cooray
A quadrillion previously unnoticed small bodies beyond Neptune have been spotted as they dimmed X-rays from a distant source. Models of the dynamics of debris in the Solar System's…
Non-Gaussian Covariance of CMB B-modes of Polarization and Parameter Degradation
Chao Li, Tristan L. Smith, Asantha Cooray
The B-mode polarization lensing signal is a useful probe of the neutrino mass and to a lesser extent the dark energy equation of state as the signal depends on the integrated mass…
Angular Diameter Distance Measurement with Galaxy Clustering in the Multipole Space
Asantha Cooray
The shape of the angular power spectrum of galaxies in the linear regime is defined by the horizon size at the matter-radiation equality. When calibrated by cosmic microwave backgr…
Cosmological bounds on dark matter-neutrino interactions
Gianpiero Mangano, Alessandro Melchiorri, Paolo Serra +2
We investigate the cosmological effects of a neutrino interaction with cold dark matter. We postulate a neutrino that interacts with a ``neutrino interacting dark matter'' (NIDM) p…
Cosmological and Astrophysical Parameter Measurements with 21-cm Anisotropies During the Era of Reionization
Mario G. Santos, Asantha Cooray
We study the prospects for extracting cosmological and astrophysical parameters from the low radio frequency 21-cm background due to the spin-flip transition of neutral Hydrogen du…
Where are the z=4 Lyman Break Galaxies? Results from Conditional Luminosity Function Models of Luminosity-dependent Correlation Functions
Asantha Cooray, Masami Ouchi
Using the conditional luminosity function (CLF) -- the luminosity distribution of galaxies in a dark matter halo -- as a way to model galaxy statistics, we study how z=4 Lyman Brea…
Weak Lensing of the Cosmic Microwave Background by Foreground Gravitational Waves
Chao Li, Asantha Cooray
Weak lensing distortion of the background cosmic microwave background (CMB) temperature and polarization patterns by the foreground density fluctuations is well studied in the lite…
Deciphering Inflation with Gravitational Waves: Cosmic Microwave Background Polarization vs. Direct Detection with Laser Interferometers
Tristan L. Smith, Hiranya V. Peiris, Asantha Cooray
A detection of the primordial gravitational wave background is considered to be the ``smoking-gun '' evidence for inflation. While super-horizon waves are probed with cosmic microw…
The Born and Lens-Lens Corrections to Weak Gravitational Lensing Angular Power Spectra
Charles Shapiro, Asantha Cooray
We revisit the estimation of higher order corrections to the angular power spectra of weak gravitational lensing. Extending a previous calculation of Cooray and Hu, we find two add…