2021
Simulations of expected signal and background of gamma-ray sources by large field-of-view detectors aboard CubeSats
GALGÓCZI, Gábor, Jakub ŘÍPA, Riccardo CAMPANA, Norbert WERNER, András PÁL et. al.Základní údaje
Originální název
Simulations of expected signal and background of gamma-ray sources by large field-of-view detectors aboard CubeSats
Autoři
GALGÓCZI, Gábor, Jakub ŘÍPA (203 Česká republika, domácí), Riccardo CAMPANA, Norbert WERNER (703 Slovensko, domácí), András PÁL, Masanori OHNO, László MÉSZÁROS, Tsunefumi MIZUNO, Norbert TARCAI, Kento TORIGOE, Nagomi UCHIDA, Yasushi FUKAZAWA, Hiromitsu TAKAHASHI, Kazuhiro NAKAZAWA, Naoyoshi HIRADE, Kengo HIROSE, Syohei HISADOMI, Teruaki ENOTO, Hirokazu ODAKA, Yuto ICHINOHE, Zsolt FREI a László KISS
Vydání
Journal of Astronomical Telescopes, Instruments, and Systems, Society of Photo-Optical Instrumentation Engineers (SPIE), 2021, 2329-4124
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10308 Astronomy
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 1.911
Kód RIV
RIV/00216224:14310/21:00121538
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000674834700040
Klíčová slova anglicky
Geant4; gamma-ray burst; gamma-rays; satellite; cosmic background
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 10. 11. 2022 11:34, Mgr. Marie Šípková, DiS.
Anotace
V originále
In recent years, the number of CubeSats (U-class spacecrafts) launched into space has increased exponentially marking the dawn of the nanosatellite technology. In general, these satellites have a much smaller mass budget compared to conventional scientific satellites, which limits shielding of scientific instruments against direct and indirect radiation in space. We present a simulation framework to quantify the signal in large field-of-view gamma-ray scintillation detectors of satellites induced by x-ray/gamma-ray transients, by taking into account the response of the detector. Furthermore, we quantify the signal induced by x-ray and particle background sources at a Low-Earth Orbit outside South Atlantic Anomaly and polar regions. Finally, we calculate the signal-to-noise ratio (SNR) taking into account different energy threshold levels. Our simulation can be used to optimize material composition and predict detectability of various astrophysical sources by CubeSats. We apply the developed simulation to a satellite belonging to a planned CAMELOT CubeSat constellation. This project mainly aims to detect short and long gamma-ray bursts (GRBs) and as a secondary science objective, to detect soft gamma-ray repeaters (SGRs) and terrestrial gamma-ray flashes (TGFs). The simulation includes a detailed computer-aided design model of the satellite to take into account the interaction of particles with the material of the satellite as accurately as possible. Results of our simulations predict that CubeSats can complement the large space observatories in high-energy astrophysics for observations of GRBs, SGRs, and TGFs. For the detectors planned to be on board the CAMELOT CubeSats, the simulations show that detections with SNR of at least 9 for median GRB and SGR fluxes are achievable.
Návaznosti
MUNI/I/0003/2020, interní kód MU |
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