Gunn-Peterson trough
like a sign that appears in the spectra when it's not there
Technical definition
The absence of a Lyα absorption feature in the spectra of high-redshift quasars, often used as a diagnostic tool to identify low-redshift sources.
like a sign that appears in the spectra when it's not there
The absence of a Lyα absorption feature in the spectra of high-redshift quasars, often used as a diagnostic tool to identify low-redshift sources.