The work presented in this thesis shows the results from an in-depth study of a sample of 58 Be stars observed between the years 1998 and 2022. The spectroscopy of this sample has been studied, ...
GRB 210619B was a bright long gamma-ray burst (GRB) which was optically followed up by the novel polarimeter MOPTOP on the Liverpool Telescope. This was the first GRB detection by the instrument since ...