English Explanatory Dictionary

Gunn-Peterson trough

English dictionary entry

Meanings

noun
  1. A feature in astronomical spectrometry of distant light, caused by the Reionization Era's absorption of UV light, leaving a gap in the spectrum.

Word forms

Gunn-Peterson trough Gunn-Peterson troughs

Etymology

From the theoreticians who predicted this effect, astronomers James E. Gunn and Bruce Peterson, which creates a lack of radiation at a span of wavelengths.

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