Speaker
Description
Using reconstructed initial conditions in the Sloan Digital Sky Survey (SDSS) survey volume, we carry out constrained hydrodynamic simulations in three regions representing different types of the cosmic web: the Coma cluster of galaxies; the SDSS Great Wall; and a large low-density region at z ∼ 0.05. The simulations successfully predict some discontinuities associated with shock fronts and contact edges, which can be tested using observations of the thermal Sunyaev–Zel’dovich effect and X-rays. The constrained simulations, which follow the formation and heating history of the observed cosmic web, provide an important avenue to interpret observational data. We also find a tight correlation between the gas temperature and the strength of the local tidal field, which may show the connection between gas and dark matter.
