International audienceContext. The quest for the cosmological parameters that describe our universe continues to motivate the scientific community to undertake very large survey initiatives across the electromagnetic spectrum. Over the past two decades, the Chandra and XMM-Newton observatories have supported numerous studies of X-ray-selected clusters of galaxies, active galactic nuclei (AGNs), and the X-ray background. The present paper is the first in a series reporting results of the XXL-XMM survey; it comes at a time when the Planck mission results are being finalised. Aims. We present the XXL Survey, the largest XMM programme totaling some 6.9 Ms to date and involving an international consortium of roughly 100 members. The XXL Survey c...
Context. The quest for the cosmological parameters that describe our universe continues to motivate ...
The quest for the cosmological parameters that describe our universe continues to motivate the scien...
Context. The quest for the cosmological parameters that describe our universe continues to motivate ...
International audienceContext. The quest for the cosmological parameters that describe our universe ...
Context. The quest for the cosmological parameters that describe our universe continues to motivate ...
Context. The quest for the cosmological parameters that describe our universe continues to motivate ...
The quest for the cosmological parameters that describe our universe continues to motivate the scien...
Context. The quest for the cosmological parameters that describe our universe continues to motivate ...
International audienceContext. The quest for the cosmological parameters that describe our universe ...
Context. The quest for the cosmological parameters that describe our universe continues to motivate ...
Context. The quest for the cosmological parameters that describe our universe continues to motivate ...
The quest for the cosmological parameters that describe our universe continues to motivate the scien...
Context. The quest for the cosmological parameters that describe our universe continues to motivate ...