The scientific payload on-board the HERMES-TP and HERMES-SP CubeSat missions
Y. Evangelista, F. Fiore, F. Fuschino, R. Campana, F. Ceraudo, E., Demenev, A. Guzman, C. Labanti, G. La Rosa, M. Fiorini, M. Gandola, M., Grassi, F. Mele, D. Milankovich, G. Morgante, P. Nogara, A. Pal, R., Piazzolla, S. Pliego Caballero, I. Rashevskaya, F. Russo, G. Sciarrone

TL;DR
The paper describes the design and technical solutions of the HERMES-TP and HERMES-SP CubeSat missions, which host miniaturized detectors for high-energy transient astrophysics, enabling fast localization of gamma-ray bursts in space.
Contribution
It presents the innovative payload design and integration of wide-energy-band X-ray and gamma-ray detectors within a 1U CubeSat for high-energy transient monitoring.
Findings
Successful integration of sensitive detectors in CubeSats
Wide-energy-band detection capability achieved
Precise localization of high-energy transients possible
Abstract
HERMES (High Energy Rapid Modular Ensemble of Satellites) Technological and Scientific pathfinder is a space borne mission based on a LEO constellation of nano-satellites. The 3U CubeSat buses host new miniaturized detectors to probe the temporal emission of bright high-energy transients such as Gamma-Ray Bursts (GRBs). Fast transient localization, in a field of view of several steradians and with arcmin-level accuracy, is gained by comparing time delays among the same event detection epochs occurred on at least 3 nano-satellites. With a launch date in 2022, HERMES transient monitoring represents a keystone capability to complement the next generation of gravitational wave experiments. In this paper we will illustrate the HERMES payload design, highlighting the technical solutions adopted to allow a wide-energy-band and sensitive X-ray and gamma-ray detector to be accommodated in a…
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