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GRBAlpha: The smallest astrophysical space observatory

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F23%3APU149162" target="_blank" >RIV/00216305:26220/23:PU149162 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.aanda.org/articles/aa/pdf/2023/09/aa46182-23.pdf" target="_blank" >https://www.aanda.org/articles/aa/pdf/2023/09/aa46182-23.pdf</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1051/0004-6361/202346182" target="_blank" >10.1051/0004-6361/202346182</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    GRBAlpha: The smallest astrophysical space observatory

  • Original language description

    Aims. Since it launched on 22 March 2021, the 1U-sized CubeSat GRBAlpha operates and collects scientific data on high-energy transients, making it the smallest astrophysical space observatory to date. GRBAlpha is an in-orbit demonstration of a gamma-ray burst (GRB) detector concept suitably small to fit into a standard 1U volume. As was demonstrated in a companion paper, GRBAlpha adds significant value to the scientific community with accurate characterization of bright GRBs, including the recent outstanding event of GRB 221009A. Methods. The GRB detector is a 75 x 75 x 5 mm CsI(Tl) scintillator wrapped in a reflective foil (ESR) read out by an array of SiPM detectors, multi-pixel photon counters by Hamamatsu, driven by two separate redundant units. To further protect the scintillator block from sunlight and protect the SiPM detectors from particle radiation, we applied a multi-layer structure of Tedlar wrapping, anodized aluminium casing, and a lead-alloy shielding on one edge of the assembly. The setup allows observations of gamma radiation within the energy range of 70-890 keV with an energy resolution of similar to 30%. Results. Here, we summarize the system design of the GRBAlpha mission, including the electronics and software components of the detector, some aspects of the platform, and the current semi-autonomous operations. In addition, details are given about the raw data products and telemetry in order to encourage the community to expand the receiver network for our initiatives with GRBAlpha and related experiments.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - 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)

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2023

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    ASTRONOMY & ASTROPHYSICS

  • ISSN

    0004-6361

  • e-ISSN

    1432-0746

  • Volume of the periodical

    677

  • Issue of the periodical within the volume

    neuvedeno

  • Country of publishing house

    FR - FRANCE

  • Number of pages

    9

  • Pages from-to

    1-9

  • UT code for WoS article

    001062452800005

  • EID of the result in the Scopus database

    2-s2.0-85170825919