M. E. Ramos-Ceja

TL;DR: The Advanced Telescope for High Energy Astrophysics (Athena+) mission as discussed by the authors provides the necessary performance (e.g., angular resolution, spectral resolution, survey grasp) to address these questions and revolutionize our understanding of the Hot and Energetic Universe.

TL;DR: The XXL-XMM survey as discussed by the authors provides constraints on the dark energy equation of state from the space-time distribution of clusters of galaxies and serves as a pathfinder for future, wide-area X-ray missions.

TL;DR: The XXL-XMM survey as discussed by the authors provides constraints on the dark energy equation of state from the space-time distribution of clusters of galaxies and serves as a pathfinder for future, wide-area X-ray missions.

TL;DR: In this paper, the properties of the XXL cluster catalogue are described in detail, as well as associated catalogues of more specific objects such as super-clusters and fossil groups, and the complete subset of clusters for which the selection function is well determined plus all X-ray clusters which are, to date, confirmed.

TL;DR: In this article, the properties of the XXL cluster catalogue in its present state, as well as associated catalogues as super-clusters and fossil groups, are described in detail.