Radio-loud AGN: is there a link between luminosity and cluster environment?
| Autor: | Ineson, J., Croston, J. H., Hardcastle, M. J., Kraft, R. P., Evans, D. A., Jarvis, M. |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | ApJ (2013) 770, 136 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/0004-637X/770/2/136 |
| Popis: | We present here the first results from the Chandra ERA (Environments of Radio-loud AGN) Large Project, characterizing the cluster environments of a sample of 26 radio-loud AGN at z ~ 0.5 that covers three decades of radio luminosity. This is the first systematic X-ray environmental study at a single epoch, and has allowed us to examine the relationship between radio luminosity and cluster environment without the problems of Malmquist bias. We have found a weak correlation between radio luminosity and host cluster X-ray luminosity, as well as tentative evidence that this correlation is driven by the subpopulation of low-excitation radio galaxies, with high-excitation radio galaxies showing no significant correlation. The considerable scatter in the environments may be indicative of complex relationships not currently included in feedback models. Comment: Accepted for publication in ApJ, 16 pages, 12 figures, 7 tables |
| Databáze: | arXiv |
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