3 papers
astro-ph2001
The baryon fraction in X-Rays galaxy clusters revisited
R. Sadat, A. Blanchard, M. Douspis
One of the most direct way to constrain the matter density of the universe is to measure the baryon content in X-Rays clusters of galaxies. Typical value of the mean gas mass…
astro-ph1998
Approximating the Likelihood Function of CMB Experiments
J. G. Bartlett, A. Blanchard, M. Douspis +1
We discuss the problem of constraining cosmological parameters with cosmic microwave background band--power estimates. Because these latter are variances, they do not have gaussian…
astro-ph1998
New Territory: SZ Cluster Surveys
J. G. Bartlett, A. Blanchard, D. Barbosa
The potential of the Sunyaev-Zel'dovich (SZ) effect for cluster studies has long been appreciated, although not yet fully exploited. Recent technological advances and improvements…