The structure of the ultrarelativistic prompt emission phase and the properties of the black hole in GRB 180720B

F. Rastegarnia, R. Moradi, J. A. Rueda +5

In analogy with GRB 190114C, we here analyze the ultrarelativistic prompt emission (UPE) of GRB 180720B observed in the rest-frame time interval $t_{\mathrm{rf}}=4.84$--$10.89$~s by Fer…