nuSpaceSim: A Comprehensive Simulation Package for Modeling Extensive Air Shower Cherenkov and Radio Signals from Cosmic Neutrinos

nuSpaceSim is a comprehensive simulation built to model the optical and radio signals from extensive air showers (EAS) induced by cosmic neutrinos. It is designed to aid the community in the development of sub-orbital and space-based experiment, and v1.0, available via Github & pip on a HEASARC webpage, models the upward-moving EASs sourced from tau neutrino interactions within the Earth to determine diffuse flux sensitivity using user-defined input. nuPyProp is used as the Earth-emergent lepton generator and models the above a PeV neutrino interactions and energy loss. nuSpaceSim uses a vectorized, multi-tread Python implementation to efficiently simulate all aspects of the processes that lead to the EAS signal at a detector at a specific altitude, including modeling of the tau lepton decays and subsequent EAS, the air optical Cherenkov and radio signals, atmospheric propagation, and detector response while providing event-by-event analysis variables. Further development is in progress to model the sensitivity and sky-coverage for transient sources, improve models of the atmosphere (including clouds, aerosols, and ozone) and add enhancements to the optical EAS signals. The software and physics modeling in nuSpaceSim will be discussed along with example comparisons.