We constrain flat cosmological models with a joint likelihood analysis of a new compilation of data from the cosmic microwave background (CMB) and from the 2dF Galaxy Redshift Survey (2dFGRS). Fitting the CMB alone yields a known degeneracy between the Hubble constant h and the matter density Ωm, which arises mainly from preserving the location of the peaks in the angular power spectrum. This ‘...

The CMB radiation is completely characterized by its temperature anisotropy and polarization in each direction in the sky. Today, studies of the temperature anisotropies in the CMB have provided strong constraints on many of the cosmological parameters. However, for precision cosmology we still need to consider the polarization information of the CMB to break some of the degenerecies that exist...

We examine the effects of photon-axion mixing on the CMB. We show that if there are very underdense regions between us and the last scattering surface which contain coherent magnetic fields (whose strength can be orders of magnitude weaker than the current bounds), then photon-axion mixing can induce observable deviations in the CMB spectrum. Specifically, we show that the mixing can give rise ...

In this paper, we present a power spectrum formalism that combines the full 3D information from the galaxy ellipticity field, with information from the cosmic microwave background (CMB). We include in this approach galaxy cosmic shear and galaxy intrinsic alignments, CMB deflection, CMB temperature, and CMB polarization data; including the interdatum power spectra between all quantities. We app...

We present predictions on the angular power spectrum of cosmic microwave background (CMB) fluctuations due to extragalactic point sources (EPS) by using a method for simulating realistic 2D distributions of clustered EPS. Both radio and far–IR selected source populations are taken into account. To analyze different clustering scenarios, we exploit angular power spectra of EPS, P (k), estimated ...

To minimize instrumentally induced systematic errors, cosmic microwave background (CMB) anisotropy experiments measure temperature differences across the sky using paires of horn antennas, temperature map is recovered from temperature differences obtained in sky survey through a map-making procedure. To inspect and calibrate residual systematic errors in recovered temperature maps is important ...

We report here the first full sky component separation and CMB power spectrum estimation using a Wiener filtering technique on simulated data from the upcoming MAP experiment, set to launch in early 2001. The simulations included contributions from the three dominant astrophysical components expected in the five MAP spectral bands, namely CMB radiation, Galactic dust, and synchrotron emission. ...

WMAP’s detection of high electron-scattering optical depth τe suggests substantial star formation at high redshift z ∼ 17±5. On the other hand, the recovered σ8 ∼ 0.84± 0.04 disfavors a cluster Sunyaev-Zeldovich (SZ) origin for the observed small-scaleCMB fluctuation excess, which generally requires σ8 ∼ 1.1. Here we consider the effects of high-redshift star formation on the CMB. We derive a f...

The tremendous experimental progress in cosmic microwave background (CMB) temperature and polarization anisotropy studies over the last few years has helped establish a standard paradigm for cosmology at intermediate epochs and has simultaneously raised questions regarding the physical processes at the two opposite ends of time. What is the physics behind the source of structure in the universe...

OBJECTIVE To assess the association of proteinuria with the frequency and number of cerebral microbleeds (CMB), a harbinger of future hemorrhagic stroke. DESIGN Cross-sectional analysis. Patients Patients with consecutive ischemic stroke and transient ischemic attack admitted to a university hospital during a 22-month period. INTERVENTIONS Presence and number of CMB were evaluated using gra...