5 papers · 1 filter
The WOMBAT Challenge: A "Hounds and Hares" Exercise for Cosmology
Eric Gawiser, Douglas Finkbeiner, Andrew Jaffe +10
The Wavelength-Oriented Microwave Background Analysis Team (WOMBAT) is constructing microwave skymaps which will be more realistic than previous simulations. Our foreground models…
Contribution of Bright Extragalactic Radio Sources to Microwave Anisotropy
Aaron Sokasian, Eric Gawiser, George F. Smoot
We estimate the contribution of extragalactic radio sources to fluctuations in sky temperature over the range of frequencies (10-300 GHz) used for Cosmic Microwave Background (CMB)…
Observational Constraints on Microwave Anisotropy from Point Sources
Eric Gawiser, Andrew Jaffe, Joseph Silk
Applying basic physical principles to recent observational results, we derive upper and lower limits on microwave anisotropy from point sources over the range of frequencies 10-100…
Reconstructing the Primordial Power Spectrum
Eric Gawiser
Cosmological models predict transfer functions by which primordial density perturbations develop into CMB anisotropy and Large-Scale Structure. We use the current set of observatio…
A Simultaneous Constraint on the Amplitude and Gaussianity of Mass Fluctuations in the Universe
James Robinson, Eric Gawiser, Joseph Silk
We consider constraints on the amplitude of mass fluctuations in the universe, sigma_8, derived from two simple observations: the present number density of clusters and the amplitu…