First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
- D. Spergel, L. Verde, Ucla
- Physics
- 11 February 2003
WMAP precision data enable accurate testing of cosmological models. We find that the emerging standard model of cosmology, a flat Λ-dominated universe seeded by a nearly scale-invariant adiabatic…
First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
- C. Bennett, M. Halpern, Ssai
- Physics
- 11 February 2003
We present full-sky microwave maps in five frequency bands (23-94 GHz) from the Wilkinson Microwave Anisotropy Probe (WMAP) first-year sky survey. Calibration errors are less than 0.5%, and the low…
On characterizing the variability properties of X-ray light curves from active galaxies
- S. Vaughan, R. Edelson, U. Southampton
- Physics
- 24 July 2003
It is demonstrated that σ 2 XS (or similarly F v a r ) shows large changes from one part of the light curve to the next, even when the variability is produced by a stationary process, which limits the usefulness of these estimators for quantifying differences in variability amplitude between different sources or from epoch to epoch in one source.
First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Temperature-Polarization Correlation
The Wilkinson Microwave Anisotropy Probe (WMAP) has mapped the full sky in Stokes I, Q, and U parameters at frequencies of 23, 33, 41, 61, and 94 GHz. We detect correlations between the temperature…
THE LICK AGN MONITORING PROJECT: BROAD-LINE REGION RADII AND BLACK HOLE MASSES FROM REVERBERATION MAPPING OF Hβ
- M. Bentz, J. Walsh, Research Center for the Early Universe
- PhysicsAstrophysical Journal
- 31 July 2009
We have recently completed a 64-night spectroscopic monitoring campaign at the Lick Observatory 3-m Shane telescope with the aim of measuring the masses of the black holes in 12 nearby (z < 0.05)…
First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: The Angular Power Spectrum
- G. Hinshaw, D. Spergel, Ucla
- Physics
- 11 February 2003
We present the angular power spectrum derived from the first-year Wilkinson Microwave Anisotropy Probe (WMAP) sky maps. We study a variety of power spectrum estimation methods and data combinations…
First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Parameter Estimation Methodology
We describe our methodology for comparing the Wilkinson Microwave Anisotropy Probe (WMAP) measurements of the cosmic microwave background (CMB) and other complementary data sets to theoretical…
First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Tests of Gaussianity
- E. Komatsu, A. Kogut, Ucla
- Physics
- 11 February 2003
We present limits to the amplitude of non-Gaussian primordial fluctuations in the WMAP 1 yr cosmic microwave background sky maps. A nonlinear coupling parameter, fNL, characterizes the amplitude of a…
SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: PLANETS AND CELESTIAL CALIBRATION SOURCES
- J. Weiland, N. Odegard, Ucla
- Physics, Geology
- 26 January 2010
We present WMAP seven-year observations of bright sources which are often used as calibrators at microwave frequencies. Ten objects are studied in five frequency bands (23–94 GHz): the outer planets…
First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Beam Profiles and Window Functions
Knowledge of the beam profiles is of critical importance for interpreting data from cosmic microwave background experiments. In this paper, we present the characterization of the in-flight optical…
...
...