GRBAlpha and VZLUSAT-2: GRB observations with CubeSats after 3 years of operations

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F24%3A00138404" target="_blank" >RIV/00216224:14310/24:00138404 - isvavai.cz</a>
Result on the web
<a href="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13093/3025855/GRBAlpha-and-VZLUSAT-2--GRB-observations-with-CubeSats-after/10.1117/12.3025855.short" target="_blank" >https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13093/3025855/GRBAlpha-and-VZLUSAT-2--GRB-observations-with-CubeSats-after/10.1117/12.3025855.short</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.3025855" target="_blank" >10.1117/12.3025855</a>

Result language
angličtina
Original language name
GRBAlpha and VZLUSAT-2: GRB observations with CubeSats after 3 years of operations
Original language description
GRBAlpha is a 1U CubeSat launched in March 2021 to a sun-synchronous LEO at an altitude of 550 km to perform an in-orbit demonstration of a novel gamma-ray burst detector developed for CubeSats. VZLUSAT-2 followed ten months later in a similar orbit carrying as a secondary payload a pair of identical detectors as used on the first mission. These instruments detecting gamma-rays in the range of 30-900 keV consist of a 56 cm2 5 mm thin CsI(Tl) scintillator read-out by a row of multi-pixel photon counters (MPPC or SiPM). The scientific motivation is to detect gamma-ray bursts and other HE transient events and serve as a pathfinder for a larger constellation of nanosatellites that could localize these events via triangulation. At the beginning of July 2024, GRBAlpha detected 140 such transients, while VZLUSAT-2 had 83 positive detections, confirmed by larger GRB missions. Almost a hundred of them are identified as gamma-ray bursts, including extremely bright GRB 221009A and GRB 230307A, detected by both satellites. We were able to characterize the degradation of SiPMs in polar orbit and optimize the duty cycle of the detector system also by using SatNOGS radio network for downlink.
Czech name
—
Czech description
—

Project
<a href="/en/project/GC24-11487J" target="_blank" >GC24-11487J: Joint Gamma Ray Bursts Observations with Small Satellites</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of SPIE : Space Telescopes and Instrumentation 2024 : Ultraviolet to Gamma Ray, PT 1
ISBN
9781510675094
ISSN
0277-786X
e-ISSN
1996-756X
Number of pages
8
Pages from-to
1-8
Publisher name
SPIE
Place of publication
Washington
Event location
Yokohama, JAPAN
Event date
Jun 16, 2024
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
001338129600178

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