CMB lensing and primordial non-Gaussianity (2009)
Hanson, Duncan, Smith, Kendrick M., Challinor, Anthony, Liguori, Michele
We study the effects of gravitational lensing on the estimation of non-Gaussianity from the bispectrum of the cosmic microwave background (CMB) temperature anisotropies. We find that the effect of...
Senatore, Leonardo, Smith, Kendrick M., Zaldarriaga, Matias
Using the recently developed effective field theory of inflation, we argue that the size and the shape of the non-Gaussianities generated by single-field inflation are generically well described by...
B-mode CMB Polarization from Patchy Screening during Reionization (2009)
Dvorkin, Cora, Hu, Wayne, Smith, Kendrick M.
B-modes in CMB polarization from patchy reionization arise from two effects: generation of polarization from scattering of quadrupole moments by reionization bubbles, and fluctuations in the...
Optimal limits on f_{NL}^{local} from WMAP 5-year data (2009)
Smith, Kendrick M., Senatore, Leonardo, Zaldarriaga, Matias
We have applied the optimal estimator for f_{NL}^{local} to the 5 year WMAP data. Marginalizing over the amplitude of foreground templates we get -4 < f_{NL}^{local} < 80 at 95% CL. Error bars of...
Reconstructing Patchy Reionization from the Cosmic Microwave Background (2008)
Dvorkin, Cora, Smith, Kendrick M.
We introduce a new statistical technique for extracting the inhomogeneous reionization signal from future high-sensitivity measurements of the cosmic microwave background temperature and polarization...
CMBPol Mission Concept Study: A Mission to Map our Origins (2008)
Baumann, Daniel, Cooray, Asantha, Dodelson, Scott, Dunkley, Joanna, Fraisse, Aurélien A., Jackson, Mark G., ...
Quantum mechanical metric fluctuations during an early inflationary phase of the universe leave a characteristic imprint in the polarization of the cosmic microwave background (CMB). The amplitude of...
CMBPol Mission Concept Study: Gravitational Lensing (2008)
Smith, Kendrick M., Cooray, Asantha, Das, Sudeep, Doré, Olivier, Hanson, Duncan, Hirata, Chris, ...
Gravitational lensing of the cosmic microwave background by large-scale structure in the late universe is both a source of cosmological information and a potential contaminant of primordial gravity...
No evidence for the cold spot in the NVSS radio survey (2008)
Smith, Kendrick M., Huterer, Dragan
We revisit recent claims that there is a "cold spot" in both number counts and brightness of radio sources in the NVSS survey, with location coincident with the previously detected cold spot in WMAP....
Detection of Gravitational Lensing in the Cosmic Microwave Background (2007)
Smith, Kendrick M., Zahn, Oliver, Dore, Olivier
Gravitational lensing of the cosmic microwave background (CMB), a long-standing prediction of the standard cosmolgical model, is ultimately expected to be an important source of cosmological...
Cosmic microwave background analysis for CAPMAP and future experiments / (2007)
Thesis (Ph.D.)--University of Chicago, Dept. of Physics, August 2007.
Algorithms for bispectra: forecasting, optimal analysis, and simulation (2006)
Smith, Kendrick M., Zaldarriaga, Matias
We propose a factorizability ansatz for angular bispectra which permits fast algorithms for forecasting, analysis, and simulation, yet is general enough to encompass many interesting CMB bispectra....
A general solution to the E-B mixing problem (2006)
Smith, Kendrick M., Zaldarriaga, Matias
We derive a general ansatz for optimizing pseudo-C_l estimators used to measure CMB anisotropy power spectra, and apply it to the recently-proposed pure pseudo-C_l formalism, to obtain an estimator...
Pure pseudo-C_l estimators for CMB B-modes (2006)
Fast heuristically weighted, or pseudo-C_l, estimators are a frequently used method for estimating power spectra in CMB surveys with large numbers of pixels. Recently, Challinor & Chon showed that...
Cosmological Information from Lensed CMB Power Spectra (2006)
Smith, Kendrick M., Hu, Wayne, Kaplinghat, Manoj
Gravitational lensing distorts the cosmic microwave background (CMB) temperature and polarization fields and encodes valuable information on distances and growth rates at intermediate redshifts into...
Supernovae, Lensed CMB and Dark Energy (2006)
Hu, Wayne, Huterer, Dragan, Smith, Kendrick M.
Supernova distance and primary CMB anisotropy measurements provide powerful probes of the dark energy evolution in a flat universe but degrade substantially once curvature is marginalized. We show...
Wayne Hu, Dragan Huterer, Kendrick M. Smith
Supernova distance and primary CMB anisotropy measurements provide powerful probes of the dark energy evolution in a flat universe but degrade substantially once curvature is marginalized. We show...
Pseudo-$C_\ell$ estimators which do not mix E and B modes (2005)
Pseudo-$C_\ell$ quadratic estimators for CMB temperature and polarization power spectra have been used in the analysis pipelines of many CMB experiments, such as WMAP and Boomerang. In the...
Weak Lensing of the CMB: Sampling Errors on B-Modes (2004)
Smith, Kendrick M., Hu, Wayne, Kaplinghat, Manoj
The B modes generated by the lensing of CMB polarization are a primary target for the upcoming generation of experiments and can potentially constrain quantities such as the neutrino mass and dark...