Probable evidence for a transient mega-electron volt emission line in the GRB 221023A

Fermi data analysis

The GBM consists of 12 sodium iodides (NaI) detectors (8 keV–1 MeV) and two bismuth germanate (BGO) detectors (20 keV –40 MeV)25, which has three different data types: continuous time (CTIME), continuous…

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