New developments in the OSIRIS simulation framework

The OSIRIS EM-PIC code [1] is a well-established kinetic plasma simulation tool actively used in the numerical modeling of many laboratory and astrophysical scenarios. In this work, we report on the new developments recently introduced into the framework. We address the implementation of new radiation and particle sources, such as ASTRL (Arbitrarily Structured Lasers) pulses, and Ionization injection of spin polarized electrons. We present the new linear Compton scattering algorithm, as well as the overdense algorithm for splitting and damping particles. We also report on the new developments of our QED module, such as the implementation of Bethe-Heitler pair production, and a spin and polarization-related module. Furthermore, we describe new features implemented in the Quasi-3D geometry, for the computation of short-wavelength electromagnetic radiation emitted from particles in this geometry. We also focus on the developments done in the General relativity module, such as static load balancing capabilities and asymmetric filtering adapted to the selected grid spacings and the inclusion of Heuristic pair production models to mimic QED effects. Finally, we present our new implementation of GPU support, including high-order particle interpolation and customized fields solvers.