The X and Gamma-Ray Imager and Spectrometer Onboard THESEUS—Status and Technological Progresses
Year: 2026
Type: article
Abstract: Gamma-Ray Bursts (GRBs) are intense bursts of high-energy photons which, in just a few seconds, outshine all other γ-ray emitters in the sky. Due to their extreme luminosity, GRBs are not only important as high-energy astrophysical phenomena but also serve as valuable probe models of the far, high-redshift Universe. The importance of these events has pushed the High-Energy Astrophysics community to propose new mission concepts over the past decade, prompting dedicated research and development efforts to achieve the required technological readiness levels. The X and Gamma-Ray Imager and Spectrometer (XGIS) is one of the two GRB monitors onboard the proposed, upcoming THESEUS space mission. Building on strong heritage from previous studies, ongoing developments and optimizations are focused on enhancing the instrument’s capabilities and increasing its technological maturity. This work presents the current status of the XGIS instrument and the latest technological advancements achieved in preparation for its deployment on THESEUS.
Source: Particles
Authors: Giulia Mattioli, Claudio Labanti, Enrico Virgilli, Lorenzo Amati, Giuseppe Bertuccio, Riccardo Campana, Giuseppe Baldazzi, Smiriti Srivastava, Edoardo Borciani, Paolo Calabretto, Marco Grassi, Piero Malcovati, Ezequiel Marchesini, Filippo Mele, Ajay Sharma, Evgeny Demenev, Francesco Ficorella, David Novel, Giancarlo Pepponi, Giovanni La Rosa, Paolo Nogara, Giuseppe Sottile
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,930
Award: G322711647
OpenAlex ID: W7119520012