Speaker
Description
Detecting UHECRs above 100 PeV involves observing the Cherenkov light that their induced extensive air showers (EAS) produce in crossing the Earth's limb.
Upping showers are caused by rare Earth-skimming neutrino-induced EAS, which are high-energy events of interest for multi-messenger astronomy.
The NUSES space mission, featuring Terzina and ZIRÈ payloads, serves as a precursor. In this contribution, we describe Terzina detection goals, geometry and optical design and its photon detection camera composed of silicon photomultipliers. Moreover, we describe the work to understand the nighttime city light backgrounds. Terzina sets the stage for future missions like POEMMA, dedicated to UHECR and UHE neutrino astronomy, or a cost-effective constellation of synchronised satellites
