Testing the isothermal Jeans model for self-interacting dark matter halos in the collapse phase
The isothermal Jeans model is tested against high-resolution N-body simulations to describe how self-interacting dark matter halos evolve, especially during core collapse. The model successfully captures core formation and lensing observables but shows discrepancies in the late collapse phase regarding central density and velocity dispersion. It serves as a fast, reliable tool for modeling SIDM halo evolution up to early collapse stages.