The Galaxy Zoo survey for giant AGN-ionized clouds: past and present black-hole accretion events
Some active galactic nuclei (AGN) are surrounded by extended emission-line regions (EELRs), which trace both the illumination pattern of escaping radiation and its history over the light-travel time from the AGN to the gas. From a new set of such EELRs, we present evidence that the AGN in many Seyfe...
| Glavni autori: | , , , , , , , , , , |
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| Format: | Journal article |
| Izdano: |
2011
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