431 citations · 1.4k across the 11 of their papers we have counts for
10 papers · 1 filter
Reduction of Cosmological Data for the Detection of Time-varying Dark Energy Density
Jason Dick, Lloyd Knox, Mike Chu
We present a method for reducing cosmological data to constraints on the amplitudes of modes of the dark energy density as a function of redshift. The modes are chosen so that (1)…
Cosmological Parameter Constraints as Derived from the Wilkinson Microwave Anisotropy Probe Data via Gibbs Sampling and the Blackwell-Rao Estimator
M. Chu, H. K. Eriksen, L. Knox +5
We study the Blackwell-Rao (BR) estimator of the probability distribution of the angular power spectrum, P(C_l|d), by applying it to samples of full-sky no-noise CMB maps generated…
Probing the Reionization History of the Universe using the Cosmic Microwave Background Polarization
M. Kaplinghat, M. Chu, Z. Haiman +3
The recent discovery of a Gunn--Peterson (GP) trough in the spectrum of the redshift 6.28 SDSS quasar has raised the tantalizing possibility that we have detected the reionization…
Using Galaxy Cluster Peculiar Velocities to Constrain Cosmological Parameters
A. Peel, L. Knox
Galaxy cluster peculiar velocities can be inferred from high-sensitivity, high-resolution multiple-frequency observations in the 30 to 400 GHz range. While galaxy cluster counts an…
Rapid Calculation of Theoretical CMB Angular Power Spectra
Manoj Kaplinghat, Lloyd Knox, Constantinos Skordis
We have developed a fast method for predicting the angular power spectrum, C_l, of the cosmic microwave background given cosmological parameters and a primordial power spectrum of…
Annihilating Cold Dark Matter
M. Kaplinghat, L. Knox, M. S. Turner
Structure formation with cold dark matter (CDM) predicts halos with a central density cusp, which are observationally disfavored. If CDM particles have an annihilation cross sectio…