GRBAlpha: the smallest astrophysical space observatory -- Part 1: Detector design, system description and satellite operations

András Pál, Masanori Ohno, László Mészáros +42

Aims. Since launched on 2021 March 22, the 1U-sized CubeSat GRBAlpha operates and collects scientific data on high-energy transients, making it the smallest astrophysical space obs…