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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GC24-11487J" target="_blank" >GC24-11487J: Společná pozorování gama záblesků malými družicemi</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of SPIE : Space Telescopes and Instrumentation 2024 : Ultraviolet to Gamma Ray, PT 1

ISBN

9781510675094

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

8

Strana od-do

1-8

Název nakladatele

SPIE

Místo vydání

Washington

Místo konání akce

Yokohama, JAPAN

Datum konání akce

16. 6. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001338129600178