The role of a cavity in the hypernova ejecta of a gamma-ray burst
Since 2018, a new style of research has been introduced in gamma-ray-burst (GRB) studies: It does not describe the prompt radiation phase observed by the Neil Gehrels Swift Observatory and the NASA Fermi Gamma-ray Space Telescope by a time-integrated spectral analysis. Such analyses are typically applied to long GRBs and obtain a band spectrum with various fitting parameters. This procedure, as recognized by David Band, does not permit a taxonomy of GRBs.
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