Gamma-Ray Burst Observations by the High-Energy Particle Detector on board the China Seismo-Electromagnetic Satellite between 2019 and 2021
Articolo
Data di Pubblicazione:
2024
Abstract:
In this paper we report the detection of five strong gamma-ray bursts (GRBs) by the High-Energy Particle Detector (HEPD-01) mounted on board the China Seismo-Electromagnetic Satellite, operational since 2018 on a Sun-synchronous polar orbit at a similar to 507 km altitude and 97 degrees inclination. HEPD-01 was designed to detect high-energy electrons in the energy range 3-100 MeV, protons in the range 30-300 MeV, and light nuclei in the range 30-300 MeV n(-1). Nonetheless, Monte Carlo simulations have shown HEPD-01 is sensitive to gamma-ray photons in the energy range 300 keV-50 MeV, even if with a moderate effective area above similar to 5 MeV. A dedicated time correlation analysis between GRBs reported in literature and signals from a set of HEPD-01 trigger configuration masks has confirmed the anticipated detector sensitivity to high-energy photons. A comparison between the simultaneous time profiles of HEPD-01 electron fluxes and photons from GRB190114C, GRB190305A, GRB190928A, GRB200826B, and GRB211211A has shown a remarkable similarity, in spite of the different energy ranges. The high-energy response, with peak sensitivity at about 2 MeV, and moderate effective area of the detector in the actual flight configuration explain why these five GRBs, characterized by a fluence above similar to 3 x 10(-5) erg cm(-2) in the energy interval 300 keV-50 MeV, have been detected.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
Palma, F.; Martucci, M.; Neubüser, C.; Sotgiu, A.; Follega, F. M.; Ubertini, P.; Bazzano, A.; Rodi, J. C.; Ammendola, R.; Badoni, D.; Bartocci, S.; Battiston, R.; Beolè, S.; Bertello, I.; Burger, W. J.; Campana, D.; Cicone, A.; Cipollone, P.; Coli, S.; Conti, L.; Contin, A.; Cristoforetti, M.; D'Angelo, G.; De Angelis, F.; De Donato, C.; De Santis, C.; Diego, P.; Di Luca, A.; Fiorenza, E.; Gebbia, G.; Iuppa, R.; Lega, A.; Lolli, M.; Martino, B.; Masciantonio, G.; Mergè, M.; Mese, M.; Morbidini, A.; Nozzoli, F.; Nuccilli, F.; Oliva, A.; Osteria, G.; Palmonari, F.; Panico, B.; Papini, E.; Parmentier, A.; Perciballi, S.; Perfetto, F.; Perinelli, A.; Picozza, P.; Piersanti, M.; Pozzato, M.; Rebustini, G.; Recchiuti, D.; Ricci, E.; Ricci, M.; Ricciarini, S. B.; Russi, A.; Sahnoun, Z.; Savino, U.; Scotti, V.; Shen, X.; Sparvoli, R.; Tofani, S.; Vertolli, N.; Vilona, V.; Vitale, V.; Zannoni, U.; Zeren, Z.; Zoffoli, S.; Zuccon, P.
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