Scientists spot a solar flare with surprising spectral behavior

On August 19, 2022, solar astronomers using the Daniel K. Inouye Solar Telescope (DKIST) on the Hawaiian island of Maui ...
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A typical γspectrum obtained by BGO detector (red dash line) and the corresponding unfolded γ spectrum (blue dash-dot line). The reconstructed spectrum is shown as black line ...

The total detector efficiency and the efficiencies of individual rings. The detector efficiency curves were simulated by neutron-evaporation spectra and monochromatic neutrons. The red dots are given ...