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@inproceedings{2230602,
author = {Řípa, Jakub and Pál, András and Ohno, Masanori and Werner, Norbert and Mészáros, László and Csák, Balázs and Dafčíková, Marianna and Dániel, Vladimír and Dudáš, Juraj and Frajt, Marcel and Hanák, Peter and Hudec, Ján and Junas, Milan and Kapuš, Jakub and Kasal, Miroslav and Koleda, Martin and Laszlo, Robert and Lipovsky, Pavol and Münz, Filip and Rezenov, Maksim and Šmelko, Miroslav and Svoboda, Petr and Takahashi, Hiromitsu and Topinka, Martin and Urbanec, Tomáš and Riffald Souza Breuer, JeanandPaul Bernhard and Enoto, Teruaki and Frei, Zsolt and Fukazawa, Yasushi and Galgóczi, Gábor and Hroch, Filip and Ichinohe, Yuto and Kiss, László L. and Matake, Hiroto and Mizuno, Tsunefumi and Nakazawa, Kazuhiro and Odaka, Hirokazu and Poon, Helen and Uchida, Nagomi and Uchida, Yuusuke},
address = {Washington},
booktitle = {Proceedings of SPIE, Volume 12181: Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray},
doi = {http://dx.doi.org/10.1117/12.2629332},
editor = {Jan-Willem A. den Herder, Shouleh Nikzad, Kazuhiro Nakazawa},
keywords = {gamma-rays; gamma-ray bursts; high-energy astrophysics; nano-satellites; instrumentation; detectors; scintillators; multi-pixel photon counter; low Earth orbit background},
howpublished = {elektronická verze "online"},
language = {eng},
location = {Washington},
isbn = {978-1-5106-5343-6},
pages = {1-11},
publisher = {SPIE},
title = {Early results from GRBAlpha and VZLUSAT-2},
url = {https://arxiv.org/pdf/2207.03272.pdf},
year = {2022}
}
TY - JOUR
ID - 2230602
AU - Řípa, Jakub - Pál, András - Ohno, Masanori - Werner, Norbert - Mészáros, László - Csák, Balázs - Dafčíková, Marianna - Dániel, Vladimír - Dudáš, Juraj - Frajt, Marcel - Hanák, Peter - Hudec, Ján - Junas, Milan - Kapuš, Jakub - Kasal, Miroslav - Koleda, Martin - Laszlo, Robert - Lipovsky, Pavol - Münz, Filip - Rezenov, Maksim - Šmelko, Miroslav - Svoboda, Petr - Takahashi, Hiromitsu - Topinka, Martin - Urbanec, Tomáš - Riffald Souza Breuer, Jean-Paul Bernhard - Enoto, Teruaki - Frei, Zsolt - Fukazawa, Yasushi - Galgóczi, Gábor - Hroch, Filip - Ichinohe, Yuto - Kiss, László L. - Matake, Hiroto - Mizuno, Tsunefumi - Nakazawa, Kazuhiro - Odaka, Hirokazu - Poon, Helen - Uchida, Nagomi - Uchida, Yuusuke
PY - 2022
TI - Early results from GRBAlpha and VZLUSAT-2
PB - SPIE
CY - Washington
SN - 9781510653436
KW - gamma-rays
KW - gamma-ray bursts
KW - high-energy astrophysics
KW - nano-satellites
KW - instrumentation
KW - detectors
KW - scintillators
KW - multi-pixel photon counter
KW - low Earth orbit background
UR - https://arxiv.org/pdf/2207.03272.pdf
N2 - We present the detector performance and early science results from GRBAlpha, a 1U CubeSat mission, which is a technological pathfinder to a future constellation of nanosatellites monitoring gamma-ray bursts (GRBs). GRBAlpha was launched in March 2021 and operates on a 550 km altitude sun-synchronous orbit. The gamma-ray burst detector onboard GRBAlpha consists of a 75×75×5 mm CsI(Tl) scintillator, read out by a dual-channel multi-pixel photon counter (MPPC) setup. It is sensitive in the ∼30−900 keV range. The main goal of GRBAlpha is the in-orbit demonstration of the detector concept, verification of the detector’s lifetime, and measurement of the background level on low-Earth orbit, including regions inside the outer Van Allen radiation belt and in the South Atlantic anomaly. GRBAlpha has already detected five, both long and short, GRBs and two bursts were detected within a time-span of only 8 hours, proving that nanosatellites can be used for routine detection of gamma-ray transients. For one GRB, we were able to obtain a high resolution spectrum and compare it with measurements from the Swift satellite. We find that, due to the variable background, the time fraction of about 67% of the low-Earth polar orbit is suitable for gamma-ray burst detection. One year after launch, the detector performance is good and the degradation of the MPPC photon counters remains at an acceptable level. The same detector system, but double in size, was launched in January 2022 on VZLUSAT-2 (3U CubeSat). It performs well and already detected three GRBs and two solar flares. Here, we present early results from this mission as well.
ER -
ŘÍPA, Jakub, András PÁL, Masanori OHNO, Norbert WERNER, László MÉSZÁROS, Balázs CSÁK, Marianna DAFČÍKOVÁ, Vladimír DÁNIEL, Juraj DUDÁŠ, Marcel FRAJT, Peter HANÁK, Ján HUDEC, Milan JUNAS, Jakub KAPUŠ, Miroslav KASAL, Martin KOLEDA, Robert LASZLO, Pavol LIPOVSKY, Filip MÜNZ, Maksim REZENOV, Miroslav ŠMELKO, Petr SVOBODA, Hiromitsu TAKAHASHI, Martin TOPINKA, Tomáš URBANEC, Jean-Paul Bernhard RIFFALD SOUZA BREUER, Teruaki ENOTO, Zsolt FREI, Yasushi FUKAZAWA, Gábor GALGÓCZI, Filip HROCH, Yuto ICHINOHE, László L. KISS, Hiroto MATAKE, Tsunefumi MIZUNO, Kazuhiro NAKAZAWA, Hirokazu ODAKA, Helen POON, Nagomi UCHIDA a Yuusuke UCHIDA. Early results from GRBAlpha and VZLUSAT-2. Online. In Jan-Willem A. den Herder, Shouleh Nikzad, Kazuhiro Nakazawa. \textit{Proceedings of SPIE, Volume 12181: Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray}. Washington: SPIE, 2022, s.~1-11. ISBN~978-1-5106-5343-6. Dostupné z: https://dx.doi.org/10.1117/12.2629332.
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