Speaker
Description
The circumgalactic medium (CGM) plays a key role in understanding the fundamental processes driving galaxy formation and evolution, such as feedback from supernovae (SN) and active galactic nuclei (AGN). The recent eRASS observations of X-ray surface brightness profiles and X-ray luminosity scaling relations at the CGM scale, present an exceptional opportunity for understanding CGM physics. Using the CAMELS simulation suite, which encompasses state-of-the-art cosmological simulations (IllustrisTNG, SIMBA, and Astrid) with varying SN and AGN feedback, we compare the the CGM X-ray surface brightness profiles and X-ray luminosity scaling relations with those from eRASS. Using emulators of the X-ray surface brightness profiles and scaling relations, we perform statistical inferences to obtain constraints on SN and AGN feedback physics. Our findings have important implications for CGM modeling in cosmological simulations, and pave the way for future multi-wavelength missions, such as CMB-S4, Athena, and LEM, to further improve our understanding of the CGM.
