Extremely compact astronomical objects such as neutron stars are surrounded by plasmas of electrons and positrons embedded in extreme magnetic fields. This simulation shows the production of a plasma of electrons and positrons (blue-violet dots) in the extremely intense magnetic field (white lines) of a neutron star. The plasma strongly interacts with the field, twisting and stretching it.
Simulation by F. Cruz using the PIC code OSIRIS@GoLP, visualization by ELI Beamlines