HERMES: An ultra-wide band X and gamma-ray transient monitor on board a nano-satellite constellation. (arXiv:1812.02432v1 [astro-ph.IM])

HERMES: An ultra-wide band X and gamma-ray transient monitor on board a nano-satellite constellation. (arXiv:1812.02432v1 [astro-ph.IM])
<a href="http://arxiv.org/find/astro-ph/1/au:+Fuschino_F/0/1/0/all/0/1">F. Fuschino</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Campana_R/0/1/0/all/0/1">R. Campana</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Labanti_C/0/1/0/all/0/1">C. Labanti</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Evangelista_Y/0/1/0/all/0/1">Y. Evangelista</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Feroci_M/0/1/0/all/0/1">M. Feroci</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Burderi_L/0/1/0/all/0/1">L. Burderi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fiore_F/0/1/0/all/0/1">F. Fiore</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ambrosino_F/0/1/0/all/0/1">F. Ambrosino</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Baldazzi_G/0/1/0/all/0/1">G. Baldazzi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bellutti_P/0/1/0/all/0/1">P. Bellutti</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bertacin_R/0/1/0/all/0/1">R. Bertacin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bertuccio_G/0/1/0/all/0/1">G. Bertuccio</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Borghi_G/0/1/0/all/0/1">G. Borghi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cirrincione_D/0/1/0/all/0/1">D. Cirrincione</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cauz_D/0/1/0/all/0/1">D. Cauz</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ficorella_F/0/1/0/all/0/1">F. Ficorella</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fiorini_M/0/1/0/all/0/1">M. Fiorini</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Gandola_M/0/1/0/all/0/1">M. Gandola</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Grassi_M/0/1/0/all/0/1">M. Grassi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Guzman_A/0/1/0/all/0/1">A. Guzman</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rosa_G/0/1/0/all/0/1">G. La Rosa</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lavagna_M/0/1/0/all/0/1">M. Lavagna</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lunghi_P/0/1/0/all/0/1">P. Lunghi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Malcovati_P/0/1/0/all/0/1">P. Malcovati</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Morgante_G/0/1/0/all/0/1">G. Morgante</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Negri_B/0/1/0/all/0/1">B. Negri</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pauletta_G/0/1/0/all/0/1">G. Pauletta</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Piazzolla_R/0/1/0/all/0/1">R. Piazzolla</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Picciotto_A/0/1/0/all/0/1">A. Picciotto</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pirrotta_S/0/1/0/all/0/1">S. Pirrotta</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pliego_Caballero_S/0/1/0/all/0/1">S. Pliego-Caballero</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Puccetti_S/0/1/0/all/0/1">S. Puccetti</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rachevski_A/0/1/0/all/0/1">A. Rachevski</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rashevskaya_I/0/1/0/all/0/1">I. Rashevskaya</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rignanese_L/0/1/0/all/0/1">L. Rignanese</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Salatti_M/0/1/0/all/0/1">M. Salatti</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Santangelo_A/0/1/0/all/0/1">A. Santangelo</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Silvestrini_S/0/1/0/all/0/1">S. Silvestrini</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Sottile_G/0/1/0/all/0/1">G. Sottile</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tenzer_C/0/1/0/all/0/1">C. Tenzer</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Vacchi_A/0/1/0/all/0/1">A. Vacchi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zampa_G/0/1/0/all/0/1">G. Zampa</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zampa_N/0/1/0/all/0/1">N. Zampa</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zorzi_N/0/1/0/all/0/1">N. Zorzi</a>

The High Energy Modular Ensemble of Satellites (HERMES) project is aimed to
realize a modular X/gamma-ray monitor for transient events, to be placed
on-board of a CubeSat bus. This expandable platform will achieve a significant
impact on Gamma Ray Burst (GRB) science and on the detection of Gravitational
Wave (GW) electromagnetic counterparts: the recent LIGO/VIRGO discoveries
demonstrated that the high-energy transient sky is still a field of extreme
interest. The very complex temporal variability of GRBs (up to the millisecond
scale) combined with the spatial and temporal coincidence between GWs and their
electromagnetic counterparts suggest that upcoming instruments require sub-ms
time resolution combined with a transient localization accuracy lower than a
degree. The current phase of the ongoing HERMES project is focused on the
realization of a technological pathfinder with a small network (3 units) of
nano-satellites to be launched in mid 2020. We will show the potential and
prospects for short and medium-term development of the project, demonstrating
the disrupting possibilities for scientific investigations provided by the
innovative concept of a new “modular astronomy” with nano-satellites (e.g. low
developing costs, very short realization time). Finally, we will illustrate the
characteristics of the HERMES Technological Pathfinder project, demonstrating
how the scientific goals discussed are actually already reachable with the
first nano-satellites of this constellation. The detector architecture will be
described in detail, showing that the new generation of scintillators (e.g.
GAGG:Ce) coupled with very performing Silicon Drift Detectors (SDD) and low
noise Front-End-Electronics (FEE) are able to extend down to few keV the
sensitivity band of the detector. The technical solutions for FEE,
Back-End-Electronics (BEE) and Data Handling will be also described.

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