Speaker
Description
Neutrinos act as probes of hadronic processes and offer a distinctive view into their astrophysical origins at high energies. When reaching energies ≳PeV, tau neutrino interactions within the Earth can produce a significant flux of tau-leptons. These tau-leptons subsequently decay, generating upward-moving extensive air showers (EAS). Using the Earth as a target for neutrinos and the atmosphere to generate signals effectively creates a detector with a mass >> gigaton. nuSpaceSim is a comprehensive simulation developed to model all the relevant physical processes that describe the neutrino-induced Earth-emergent lepton chain to help design the next generation of balloon- and space-based experiments, estimate the exposure of ground-based experiments to these showers, as well as understand the data from recent experiments such as EUSO-SPB2 and ANITA. The simulation includes the modeling of neutrino interactions inside the Earth that produce leptons, the propagation of the leptons through the Earth into the atmosphere and their decay, forming composite EAS, generating the air optical Cherenkov and radio signals, modeling their propagation and attenuation through the atmosphere (including clouds and ionosphere effects) and modeling the response of detectors at an user-defined altitude. In this talk, the nuSpaceSim software, physics modeling, and the cosmic neutrino measurement capabilities of example ground, sub-orbital and space-based experimental configurations will be presented.
