Recent particle-in-cell (PIC) simulation studies have addressed particle acceleration and magnetic field generation in relativistic astrophysical flows by plasma phase space structures. We discuss the astrophysical environments such as the jets of compact objects. and we give an overview of the global PIC simulations of shocks. These reveal several types of phase space structures. https://www.bekindtopets.com/great-deal-Jake-s-Wire-Tightener-Clips-limited-choice/