I will present observational predictions of X-rays, FRBs, and 21-cm HI for the local circumgalactic medium from a variety of simulations. [Check back for a more complete abstract later.]
I will review basic results on the virialization of the CGM, a key phase transition determining when the gas is expected to be hot vs. cold. The presentation will highlight recent insights from modeling cooling flows in galaxy-scale halos and the concept of outside-in virialization, in which the inner CGM is the last part of a halo to sustain a hot phase. Time permitting, I will summarize...
While X-rays from massive virialized halos are routinely observed, the detection of low density warm-hot intergalactic medium is much more difficult. We discuss specific spectral signatures of WHIM and the possible strategies of finding them with perspective X-ray observatories.
I will present a characterisation of gas in and around filaments at different scales of the Universe using several simulations from the TNG suite. I will show that, at Mpc-scales, the cosmic filaments at the basis of the cosmic skeleton are essentially made of gas in the warm-hot intergalactic medium (WHIM), the ‘missing baryon’ gas phase that is still partially elusive in current...
I will present the baryonification as a method to accurately model baryonic processes in a cosmological context, and show how we can exploit multi-wavelength observations to constrain both cosmology and astrophysics.
