The radio-loudness dichotomy: environment or black-hole mass?
| dc.creator | McLure, R. J. | |
| dc.creator | Dunlop, J. S. | |
| dc.date | 2001-02-09 | |
| dc.date.accessioned | 2026-07-07T01:57:40Z | |
| dc.date.available | 2026-07-07T01:57:40Z | |
| dc.description | The results of a comprehensive study of the cluster environments and black-hole masses of an optically matched sample of radio-loud and radio-quiet quasars are presented. No evidence is found for a difference in large-scale environments, with both quasar classes found to be located in clusters of Abell class $\sim0$ . Conversely, virial black-hole mass estimates based on H$_β$ line-widths show a clear difference in the quasar black-hole mass distributions. Our results suggest that a black-hole mass of $\sim10^{9}\Msolar$ is required to produce a powerful radio-loud quasar, and that it is black-hole mass and accretion rate which hold the key to the radio-loudness dichotomy. | |
| dc.description | 6 pages, 4 figures, to appear in the proceedings of the workshop on "QSO hosts and their environments", IAA, Granada, 10-12 Jan 2001 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0102166 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0102166 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/2476 | |
| dc.subject | Astrophysics | |
| dc.title | The radio-loudness dichotomy: environment or black-hole mass? | |
| dc.type | text |