Contributed Talk - Splinter NewAthena

Thursday, 14 September 2023, 17:35   (H 3025)

The large-scale-structure of the Universe as seen by Athena

F. Pacaud
University of Bonn

The gravitational collapse of large-scale structures ionizes and heats the diffuse gas permeating them to X-ray emitting temperatures. Current missions routinely observe X-ray emission from galaxy clusters which provides one of cleanest way to systematically uncover and investigate them. On the other hand, the tenuous gas in the large-scale filamentary structure remains a challenge for detection. In this contribution, I will discuss, based on state-of-the-art simulations, the potential of a wide-field instrument such as the planed Athena-WFI for a systematic investigation of lower mass and more distant clusters, as well as its ability to detect the densest phases of intercluster filaments.