Further observational evidence for a critical ionizing luminosity in active galaxies
We report the results of a survey for H I 21-cm absorption at redshifts of z ≳ 2.6 in a new sample of radio sources with the Green Bank and Giant Metrewave Radio Telescopes. From a total of 25 targets, we report zero detections in the 16 for which optical depth limits could be obtained. Based upon t...
| Autores principales: | , , , , , , |
|---|---|
| Formato: | Journal article |
| Lenguaje: | English |
| Publicado: |
Oxford University Press
2017
|