Timing techniques applied to distributed modular high-energy astronomy: the H.E.R.M.E.S. project

Sanna, Andrea and Burderi, Luciano and Di Salvo, Tiziana and Fiore, Fabrizio and Riggio, Alessandro and Galgóczi, Gábor and Pál, András and Ripa, Jakub and Werner, Norbert (2020) Timing techniques applied to distributed modular high-energy astronomy: the H.E.R.M.E.S. project. PROCEEDINGS OF SPIE - THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING, 11444. ISSN 0277-786X

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Abstract

The HERMES-TP/SP (High Energy Rapid Modular Ensemble of Satellites - Technologic and Scientific Pathfinder) is an in-orbit demostration of the so-called distributed astronomy concept. Conceived as a mini-constellation of six 3U nanosatellites hosting a new miniaturized detector, HERMES-TP/SP aims at the detection and accurate localisation of bright high-energy transients such as Gamma-Ray Bursts. The large energy band, the excellent temporal resolution and the wide field of view that characterize the detectors of the constellation represent the key features for the next generation high-energy all-sky monitor with good localisation capabilities that will play a pivotal role in the future of Multi-messenger Astronomy. In this work, we will describe in detail the temporal techniques that allow the localisation of bright transient events taking advantage of their almost simultaneous observation by spatially spaced detectors. Moreover, we will quantitatively discussed the all-sky monitor capabilities of the HERMES Pathfinder as well as its achievable accuracies on the localisation of the detected Gamma-Ray Bursts.

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