Gunn-Peterson trough

English Etymology From the theoreticians who predicted this effect, astronomers James E. Gunn (astronomer) James E. Gunn and Bruce Peterson, which creates a lack of radiation at a span of wavelengths. Noun A feature in astronomical spectrometry of distant light, caused by the Reionization Era's absorption of UV light, leaving a gap in the spectrum. Coordinate terms en Lyman-alpha forest en Reionization Era / en Era of Reionization en Reionization Epoch / en Epoch of Reionization