학술논문
Gamma-Ray Burst observations by the high-energy charged particle detector on board the CSES-01 satellite between 2019 and 2021
Document Type
Working Paper
Author
Palma, Francesco; Martucci, Matteo; Neubüser, Coralie; Sotgiu, Alessandro; Follega, Francesco Maria; Ubertini, Pietro; Bazzano, Angela; Rodi, James; Ammendola, Roberto; Badoni, Davide; Bartocci, Simona; Battiston, Roberto; Beolè, Stefania; Bertello, Igor; Burger, William Jerome; Campana, Donatella; Cicone, Antonio; Cipollone, Piero; Coli, Silvia; Conti, Livio; Contin, Andrea; Cristoforetti, Marco; D'Angelo, Giulia; De Angelis, Fabrizio; De Donato, Cinzia; De Santis, Cristian; Diego, Piero; Di Luca, Andrea; Fiorenza, Emiliano; Gebbia, Giuseppe; Iuppa, Roberto; Lega, Alessandro; Lolli, Mauro; Martino, Bruno; Masciantonio, Giuseppe; Mergè, Matteo; Mese, Marco; Morbidini, Alfredo; Nozzoli, Francesco; Nuccilli, Fabrizio; Oliva, Alberto; Osteria, Giuseppe; Palmonari, Federico; Panico, Beatrice; Papini, Emanuele; Parmentier, Alexandra; Perciballi, Stefania; Perfetto, Francesco; Perinelli, Alessio; Picozza, Piergiorgio; Piersanti, Mirko; Pozzato, Michele; Rebustini, Gianmaria; Recchiuti, Dario; Ricci, Ester; Ricci, Marco; Ricciarini, Sergio Bruno; Russi, Andrea; Sahnoun, Zouleikha; Savino, Umberto; Scotti, Valentina; Shen, Xuhui; Sparvoli, Roberta; Tofani, Silvia; Vertolli, Nello; Vilona, Veronica; Vitale, Vincenzo; Zannoni, Ugo; Zeren, Zhima; Zoffoli, Simona; Zuccon, Paolo
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Subject
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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 (CSES-01), operational since 2018 on a Sun-synchronous polar orbit at a $\sim$ 507 km altitude and 97$^\circ$ 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. 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 $\sim$ 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, characterised by a fluence above $\sim$ 3 $\times$ 10$^{-5}$ erg cm$^{-2}$ in the energy interval 300 keV - 50 MeV, have been detected.
Comment: Accepted for publication in The Astrophysical Journal (ApJ)
Comment: Accepted for publication in The Astrophysical Journal (ApJ)