Simulations of expected signal and background of gamma-ray sources by large field-of-view detectors aboard CubeSats

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10440243" target="_blank" >RIV/00216208:11320/21:10440243 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/21:00121538

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ybix7qyXzf" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ybix7qyXzf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/1.JATIS.7.2.028004" target="_blank" >10.1117/1.JATIS.7.2.028004</a>

Result language

angličtina

Original language name

Simulations of expected signal and background of gamma-ray sources by large field-of-view detectors aboard CubeSats

Original language description

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. (C) 2021 Society of Photo-Optical Instrumentation Engineers (SPIE)

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Astronomical Telescopes Instruments and Systems

ISSN

2329-4124

e-ISSN

—

Volume of the periodical

7

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

43

Pages from-to

028004

UT code for WoS article

000674834700040

EID of the result in the Scopus database

2-s2.0-85110667341