| |
 |
| Paper: |
A Path to Radio–Loudness through Gas–Poor Galaxy Mergers and the Role of Retrograde Accretion |
| Volume: |
427, Accretion and Ejection in AGN: a Global View |
| Page: |
19 |
| Authors: |
Dotti, M.; Colpi, M.; Maraschi, L.; Perego, A.; Volonteri, M. |
| Abstract: |
In this note, we explore a pathway to radio–loudness under the hypothesis that retrograde accretion onto giant (MBH∼109 M☉) rapidly spinning (≳ 0.7) black holes (BHs) leads to the launch of powerful jets, as seen in radio-loud QSOs and recently in LAT/Fermi and BAT/Swift Blazars. Counter-rotation of the accretion disc relative to the BH spin is here associated to gas-poor galaxy mergers progenitors of giant (missing-light) ellipticals. The occurrence of retrograde accretion enters as unifying element that may account for the radio–loudness/galaxy morphology dichotomy observed in AGN. |
|
|
|
|
|
