Teraelectronvolt emission from the $\gamma$-ray burst GRB 190114C
作者： G. Maneva , G. Busetto , M. Strzys , D. Hrupec , M. Persic
DOI: 10.1038/S41586-019-1750-X
关键词:
摘要: Gamma-ray bursts (GRBs) of the long-duration class are most luminous sources electromagnetic radiation known in Universe. They generated by outflows plasma ejected at near speed light newly formed neutron stars or black holes stellar mass cosmological distances. Prompt flashes MeV gamma rays followed longer-lasting afterglow emission from radio waves to GeV rays, due synchrotron energetic electrons accompanying shock waves. Although even higher, TeV energies other mechanisms had been theoretically predicted, it never detected previously. Here we report clear detection GRB 190114C band, achieved after many years dedicated searches for GRBs. Gamma energy range 0.2--1 observed about 1 minute burst (at more than 50 standard deviations first 20 minutes). This unambiguously reveals a new component GRB, whose power is comparable that component. The similarity radiated and temporal behaviour X-ray bands points processes such as inverse Compton mechanism emission, while ultrahigh-energy protons disfavoured their low radiative efficiency.
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