Gunn-Peterson trough
English edit
Etymology edit
From the theoreticians who predicted this effect, astronomers James E. Gunn and Bruce Peterson, which creates an lack of radiation at a span of wavelengths.
Noun edit
Gunn-Peterson trough (plural Gunn-Peterson troughs)
- A feature in astronomical spectrometry of distant light, caused by the Reionization Era's absorption of UV light, leaving a gap in the spectrum.