tokens: This research has made use of data and/or software provided by the High Energy Astrophysics Science Archive Research Center (HEASARC), which is a service of the Astrophysics Science Division at NASA/GSFC and the High Energy Astrophysics Division of the Smithsonian Astrophysical Observatory. This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. Authors thank the Russian Science Foundation (grant 19-12-00423), National Natural Science Foundation of China (NSFC U1838201), German Academic Exchange Service (DAAD, project 57405000, VD), and the Academy of Finland travel grants 324550 (ST) and 316932 (AL) for support.
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