Athena X-ray Advances: ACO Science Webinars. Angie Veronica (31/01/2024). скачать в хорошем качестве

Athena X-ray Advances: ACO Science Webinars. Angie Veronica (31/01/2024).

Characterizing the warm-hot filaments in a galaxy cluster system with eROSITA. The A3391/95 system is a complex galaxy cluster system that has been observed by various X-ray instruments to search for the "missing" baryons located in the Warm-Hot Intergalactic Medium (WHIM). The eROSITA Performance Verification (PV) observations provide the largest and deepest X-ray large-scale overview of this system. Our results include obtaining the characteristic properties (e.g., the X-ray temperature, R500, and M500) of a spatially resolved group of galaxies, residing in one of the filaments. Furthermore, from the filament region, we detect a warm-hot ~1 keV gas, which is close to the upper limit of the predicted temperature of the WHIM. Finally, with the (new)Athena, characterizing nearby WHIM emission filaments should become routine, enabling us to systematically trace and characterize the warm/hot phase of the nearby baryons. We will show some of the prospects/feasibility of the filament studies with the (new)Athena.